EI7GL....A diary of amateur radio activity

Saturday, March 2, 2024

Bob Heil, K9EID - Silent Key

It was sad to hear that Bob Heil, K9EID, is now a Silent Key. Bob passed away on February 28th, 2024 after a year-long battle with cancer.

Bob was the founder of HEIL SOUND which is well known for audio equipment like microphones and headphones for the amateur radio community and music industry.

HEIL HAM RADIO released the following statement... "Our beloved founder, Dr. Bob Heil, K9EID, is now a Silent Key. Bob fought a valiant, year-long battle with cancer, and passed peacefully surrounded by his family. Bob’s lifelong passion for amateur radio was clear to everyone involved in the hobby. Everything Bob did for the betterment and growth of amateur radio - from his instructional handbooks and countless presentations to his support of the ARRL and youth programs - was based on the foundation and spirit of service. Bob was an Elmer to all of us. While Bob’s presence will dearly be missed, his impact on the hobby and everyone in it will forever be felt. On behalf of Bob to all ham radio operators worldwide, 73."

Dr. Bob Heil, K9EID (October 5, 1940 – February 28, 2024)

1) Wikipedia link

Friday, March 1, 2024

40 MHz reception report from Bill Smith, W1-7897 for Feb 2024

Thanks to short wave listener Bill Smith, W1-7897 for sending on his reception report for February 2024.

Bill who is located near Douglas in Massachusetts in the United States is using a Yaesu FT-847 as a receiver on the 40 MHz (8m) band with a 5-element beam for the 50 MHz band about 6m above ground level.

40 MHz reception report from Bill Smith, W1-7897 for February 2024:

1st Feb 2024 - EI2IP (IO52QP) in Ireland called CQ from 14:25 UTC until 14:32 UTC on 40.680 MHz FT8. No answers received. Signal strength ranged from -6 to -15 dB.

12th Feb 2024 - 40.680 MHz FT8: Band opened suddenly with LX5JX (JO30) in Luxembourg ending QSO with ZS6OB (KG44) in South Africa at 15:17 UTC. No prior signals from LX5JX. ZS6OB not heard here. LX5JX -18 dB. My antenna pointed towards southern Europe (9A/S5). LX5JX then called CQ for 2 minutes (-15 dB) and presumably left.

EI2IP (IO52) appeared and worked VE2CYX (FN35) in Quebec, Canada at 1526 UTC . VE2CYX not heard here. EI2IP then called CQ until 15:39 UTC without an answer. Signal strength peaked at 1 dB with the nadir at -19 dB.

13th Feb 2024 - LX5JX (JO30) called CQ from 14:11 to 14:50 UTC with no answers. Signal strength ranged from -19 dB to -7 dB.

15th Feb 2024 - LX5JX (JO30) called CQ from 16:11 to 16:13 UTC and worked VA2CYX (FN35) at 16:14 with signal strength -14dB. VA2CYX not heard here. Then, LX5JX called CQ from 16:16 to 16:31 UTC with no answer. Signal strength ranged from -20 to -15 dB.

17th Feb 2024 - LX5JX (JO30) noted calling CQ at 13:53 UTC in FT8 mode. No answer and no other CQs. Signal Strength -17 dB.

***

In summary... As can be seen from the map above, the path to the stations in Europe was about 5000-6000kms and was most likely two F2 layer hops. Bill's report shows that the maximum usable frequency (MUF) across the North Atlantic at the moment is reaching at least 40 MHz.

VA2CYX in Quebec, Canada is about 500kms to the north and is too close for F2 layer propagation.

Thanks for the report Bill!

For more information on the 40 MHz band, go to https://ei7gl.blogspot.com/p/40-mhz.html

Wednesday, February 28, 2024

2024 10m QRSS Challenge: - VK4BAP in Australia 28th Feb

As part of a challenge for 2024, I've decided to see how many QRSS signals I could capture on the 28 MHz band during the year. On the 28th of February, I noticed VK4BAP Queensland, Australia.

For my first attempt above, I managed to get a positive ID on the signal. However, a very strong OH station from Finland just above using WSPR was playing havoc with my audio levels. I tried to adjust the volume as best as I could and managed some sort of screen grab.

Finland is just one F2 layer hop from my location on the south coast of Ireland and signals are usually very strong. The QRSS signal from Australia by contrast is just about visible in the noise.

It's a bit like waiting on the bank of a river and waiting for a fish to bite. I'd start to get a reasonable QRSS signal from VK4BAP only for the OH station to then clobber it! :o)

Eventually, the timing got to a stage so that the VK station started just after the OH station had finished transmitting and I managed to get a reasonable if somewhat weak screengrab.

My target at the end of the day is to get a full screengrab of a signal which can be positively identified regardless of how weak it is.

The distance was about 16,070 kms and the propagation mode was via multiple F2 layer hops. There may have been some chordal hop in there as well. The time for the reception reports was about 09:00 UTC.

In summary... That brings the QRSS tally so far for 2024 up to 16-callsigns & 9 DXCC.

1) 08 Jan 2024: VE1VDM - DXCC #1
2) 10 Jan 2024: VA1VM
3) 15th Jan 2024: G0MBA - DXCC #2
4) 15th Jan 2024: G0PKT
5) 15th Jan 2024: AE0V - DXCC #3
6) 16th Jan 2024: RD4HU - DXCC #4
7) 16th Jan 2024: W1BW
8) 17th Jan 2024: OH5KUY - DXCC #5
9) 18th Jan 2024: TF3HZ - DXCC #6
10) 6th Feb 2024: VA3RYV
11) 16th Feb 2024: IK2JET - DXCC #7
12) 16th Feb 2024: N8NJ
13) 21st Feb 2024: PY3FF - DXCC #8
14) 26th Feb 2024: VE6NGK
15) 27th Feb 2024: NM5ER
16) 28th Feb 2024: VK4BAP - DXCC #9

Addendum: Brian, VK4BAP reports that this was his first day ever transmitting QRSS. He was using 1 watt to a Moxon beam pointing to Europe.

Tuesday, February 27, 2024

2024 10m QRSS Challenge: - NM5ER 27th Feb

As part of a challenge for 2024, I've decided to see how many QRSS signals I could capture on the 28 MHz band during the year. On the 27th of February, I managed to get a good capture of NM5ER in New Mexico.

The QRSS signal of NM5ER can be seen above at the top of the screen and this was the best one of several that I saw today. It really was a marginal signal and it didn't take much fading for me to lose large parts of the signal.

By contrast, the other signals listed about were a lot more consistent.

The distance was about 7800kms and I suspect the propagation mode was either two long or three shorter F2 layer hops.

In summary... That brings the QRSS tally so far for 2024 up to 15-callsigns & 8 DXCC.

Addendum: Evans NM5ER confirms that his location is Las Cruces in New Mexico (DM62qq). He is running about 1.75 watts into a MFJ-1982LP End Fed Half-Wave Wire antenna tuned to 28 MHz.

Monday, February 26, 2024

2024 10m QRSS Challenge: - VE6NGK 26th Feb

As part of a challenge for 2024, I've decided to see how many QRSS signals I could capture on the 28 MHz band during the year. On the 26th of February, I managed to get a good capture of VE6NGK in the city of Calgary in the province of Alberta, Canada.

As can be seen from the image above, there was quite a bit of frequency drift on the QRSS signal. In reality, the signal only drifted upwards about 5Hz over the space of about 8 minutes but in the world of QRSS, these small changes are easily visible.

About 20 minutes later, I got a second screen capture when the signal was stronger.

The distance from Calgary to my location on the south coast of Ireland is about 6620kms. The propagation mode was probably two F2 layer hops but what make this path more of a challenge is that it goes well to the north.

I also saw NM3ER in New Mexico but I was unable to get a good screen grab. Another day.

In summary... That brings the QRSS tally so far for 2024 up to 14-callsigns & 8 DXCC.

Addendum: Kam, VA6CA reports the following... "VE6NGK is my other call. I was running 5W at the time I believe. Was at 500mW at the beginning but not getting anywhere.

Below is the transmitting station. It's a homebrew project using components from my junk box. The controller uses TTL logic chips. and the dual tone audio generator (the bottom board) uses two "tuning fork resonators" at frequencies 410 Hz. I physically trimmed one to get the audio tone frequency difference I need. The 410Hz was 4X up using PLL to get the output harmonics outside the FT817 SSB filter to minimize splattering."

Friday, February 23, 2024

Notice: Upcoming HAARP ionospheric tests from Alaska - 28th Feb to 3rd Mar 2024

High-frequency Active Auroral Research Program (HAARP) is based in Alaska and it's a high-power, high frequency (HF) transmitter for studying the ionosphere. The principal instrument is a phased array of 180 HF crossed-dipole antennas capable of radiating 3.6 megawatts into the upper atmosphere and ionosphere. Transmit frequencies are selectable in the range of 2.7 to 10 MHz.

The research team have announced that they will be carrying out tests from the 28th of February to the 3rd of March 2024.

The press release is shown below and I've added a map to show location and distance.

To: Amateur Radio & Radio Astronomy Communities
From: HAARP Program Office
Subject: Notice of Transmission

The High-frequency Active Auroral Research Program (HAARP) will be conducting a research
campaign February 28-March 3 UTC, with operating times specified in the table below. Operating
frequencies will vary, but all HAARP transmissions will be between 2.8 MHz and 10 MHz. Actual
transmit days and times are highly variable based on real-time ionospheric and/or geomagnetic
conditions. All information is subject to change.

Some examples of experiments planned for this research campaign are the production of ELF and VLF emissions and studies on the effects of ionospheric plasma waves on orbiting satellites. These experiments will help lead to a greater understanding of the production and enhancement of ELF/VLF waves, as well as lay groundwork for future studies of satellite interactions with space plasma. For more information on ELF/VLF wave generation with HAARP, see the online HAARP FAQ at
https://haarp.gi.alaska.edu/faq.

Note that numerous experiments will operate at frequencies based on the f0F2 frequency from the
Gakona ionograms. Experiments that are dependent on f0F2 will typically operate 0.5-1 MHz below
f0F2 at the time of transmission. There are no specific data collection requests from funded
investigators, but reception reports are appreciated and may be submitted to uaf-gihaarp AT alaska DOT edu or to: HAARP, PO Box 271, Gakona, AK 99586

For updates on ionospheric conditions in Gakona, please consult ionograms from the HAARP
Diagnostic Suite: https://haarp.gi.alaska.edu/diagnostic-suite

Additional Resources for Reading Ionograms
Understanding HF Propagation and Reading Ionograms from Bootstrap Workbench:
https://www.youtube.com/watch?v=oTFKNCo3Cl8

Reading Your Ionogram-Keeping It Simple from John (VE6EY):
https://play.fallows.ca/wp/radio/shortwave-radio/reading-your-ionogram-keeping-it-simple/

The image above is an annotated ionogram from HAARP that describes features that may be of
interest. Note that f0F2 is calculated at the top left.

f0F2 is the critical frequency of the F2 layer of the Earth’s ionosphere. This is the frequency at
which radio signals stop refracting off the ionosphere and begin passing through to outer space.
For certain HAARP experiments that deal with interactions in the ionosphere, transmission
frequencies below f0F2 are desirable, while for other experiments (such as those involving high altitude satellites), staying above f0F2 is required.

Wednesday, February 21, 2024

2024 10m QRSS Challenge: - PY3FF 21st Feb

As part of a challenge for 2024, I've decided to see how many QRSS signals I could capture on the 28 MHz band during the year. On the 21st of February, I managed to get a good capture of PY3FF in Brazil, South America.

The QRSS signal from PY3FF can be seen at the top of the screen grab above. Rafael reports running 700 milliwatts into a dipole from his location in the south of Brazil.

The path length was around 10,000kms and it's likely it was three F2 layer hops. The G0MBA/G0PKT duo also shown in the screen grab are from the east coast of England and are about 700kms from my location. I believe that I am getting those signals via F2 layer backscatter.

The VOACAP propagation map below shows that the path from my location to the south of Brazil is reasonably good.

It is however one of my worst directions as I have a hill that is 3-degrees above the horizon. On 28 MHz, the signals must have been above that angle.

In summary... That brings the QRSS tally so far for 2024 up to 13-callsigns & 8 DXCC.

Tuesday, February 20, 2024

Australian stations heard on 28 MHz WSPR over a 4-week period - Jan & Feb 2024

Conditions on the 28 MHz band have been really good for the last few weeks as can be seen from the map above which shows all of the WSPR stations that I heard from the 23rd of January to the 19th of February 2024.

In total, there are 1334 individual stations which is a lot for a mode like WSPR which after all is just a beacon mode and not designed to make two way contacts. There are a lot of interesting paths in the map but the one I will focus on here are the ones to Australia.

My location in north-west Europe is in the region of 15,000 to 17,500 kms from Australia. While it's not exactly the 'other side of the planet' i.e. 20,000kms, it's still a long way for a 28 MHz signal to travel.

In total, I heard 28 stations from Australia over the 4-week period on 28 MHz. The list is shown below...

local y-m-d txCall txGrid rxCall rxGrid MHz                W SNR drift kms
2024-02-15 13:58 VK6TQ OF76of EI7GL IO51tu 28.126101 20 -16 0 15139
2024-02-01 13:22 VK6MJV OF77 EI7GL IO51tu 28.126135 10 -27 0 15028
2024-01-31 12:56 VK6LDL OF77vx EI7GL IO51tu 28.126201 5 -20 1 15047
2024-02-13 12:34 VK6HQ OF87av EI7GL IO51tu 28.126028 0.2 -26 0 15071
2024-02-06 12:26 VK6CRO OG65ud EI7GL IO51tu 28.126137 0.2 -24 -2 14335
2024-02-13 12:22 VK6BMT OF78ve EI7GL IO51tu 28.126038 0.2 -25 0 15031
2024-02-03 07:58 VK5ZBI PF95ga EI7GL IO51tu 28.12613   10 -27 0 16794
2024-02-09 07:54 VK5ADE PF94hj EI7GL IO51tu 28.126084 20 -22 0 16849
2024-02-01 08:54 VK4TMT QG62 EI7GL IO51tu 28.126097 0.1 -18 0 16894
2024-02-01 08:56 VK4SA QG62 EI7GL IO51tu 28.12615   0.2 -26 0 16894
2024-02-19 08:58 VK4PK QG62qi EI7GL IO51tu 28.126134 0.2 -19 0 16923
2024-02-14 08:42 VK4NE QG62nj EI7GL IO51tu 28.126133 0.1 -26 -1 16909
2024-02-19 09:00 VK4LA QG62 EI7GL IO51tu 28.125991 0.2 -26 0 16894
2024-02-01 08:42 VK4JBY QH30jq EI7GL IO51tu 28.126168 0.2 -28 -3 15801
2024-02-19 08:42 VK4EKA QG62ap EI7GL IO51tu 28.126177 1 -7 0 16838
2024-02-19 08:58 VK4BA QG62 EI7GL IO51tu 28.126196 0.2 -20 0 16894
2024-02-03 09:10 VK4AGR QG53wg EI7GL IO51tu 28.126187 0.2 -27 0 16768
2024-02-04 09:18 VK3VJP QF12 EI7GL IO51tu 28.126022 0.2 -20 0 17273
2024-02-16 08:06 VK3KCX/1 QF22qd EI7GL IO51tu 28.12603 5 2 -14 0 17449
2024-02-18 09:46 VK3CWF QF22ke EI7GL IO51tu 28.12606 5 -25 0 17415
2024-02-01 08:18 VK3AMW QF22ir EI7GL IO51tu 28.12607 5 5 -16 0 17362
2024-01-30 08:52 VK2XSM QF56og EI7GL IO51tu 28.12605   1 -19 -1 17419
2024-02-06 08:12 VK2VJ QF57vb EI7GL IO51tu 28.12604   1 -21 1 17373
2024-02-01 08:22 VK2QQ QF55gt EI7GL IO51tu 28.126209 5 -23 -2 17427
2024-02-12 09:20 VK2KYB QF56lf EI7GL IO51tu 28.126085 5 -27 0 17410
2024-02-19 09:52 VK2HL QG56 EI7GL IO51tu 28.126156 0.2 -25 0 16406
2024-02-16 08:06 VK2GDF QF67ch EI7GL IO51tu 28.126142 0.2 -14 4 17369
2024-02-01 07:56 VK1KF QF44mr EI7GL IO51tu 28.126049 5 -22 -3 17445

The ones I find of special interest are the low power stations which are in bold running output powers of 100 to 200 milliwatts. On my side, I'm just using a simple cheap half wave vertical CB type vertical to hear all of these stations.

It's just an example of how good conditions are now on 28 MHz at the peak of the sunspot cycle and is in marked contrast to the minimum a few years ago.

Saturday, February 17, 2024

2024 10m QRSS Challenge: - IK2JET & N8NJ 16th Feb

As part of a challenge for 2024, I've decided to see how many QRSS signals I could capture on the 28 MHz band during the year. On the 16th of February, I managed to get screen captures of IK2JET in the north of Italy and N8NJ in Ohio in the US.

1) IK2JET... At 16:17 UTC, I managed to get a successful screen capture of the QRSS signal from Alberto, IK2JET.

As can be seen from the image above, the signal wasn't too strong but it was a positive ID all the same and a new DXCC for 2024.

You can note how the QRSS signal has a slight 'fuzz' to it and is slightly distorted. It's similar to the backscatter signals from G0PKT & G0MBA which are going across the centre of the screen.

2) N8NJ... At 16:24 UTC, I got another screen capture and this time, I got a nice QRSS signal from Larry, N8NJ in Ohio.

The signal from N8NJ can be seen above at the top of the screen and it looks cleaner with less 'fuzz' than some of the other signals.

These are the WSPR decodes that I got from N8NJ during that hour and it suggests that the QRSS signal might have been in the region of -10dB.

local y-m-d txCall txGrid rxCall rxGrid MHz W SNR drift kms
2024-02-16 17:00 N8NJ EN81go EI7GL IO51tu 28.126084 1 -13 0 5574
2024-02-16 16:50 N8NJ EN81go EI7GL IO51tu 28.126082 1 -5 0 5574
2024-02-16 16:40 N8NJ EN81go EI7GL IO51tu 28.126084 1 -13 0 5574
2024-02-16 16:30 N8NJ EN81go EI7GL IO51tu 28.126083 1 -10 0 5574
2024-02-16 16:20 N8NJ EN81go EI7GL IO51tu 28.126084 1 -10 1 5574
2024-02-16 16:10 N8NJ EN81go EI7GL IO51tu 28.126084 1 -7 0 5574
2024-02-16 16:00 N8NJ EN81go EI7GL IO51tu 28.126084 1 -12 0 5574

Propagation Modes???.... What were the propagation modes responsible for these signals? I generated this propagation map below with VOACAP and the stations are marked in black.

N8NJ at 5570kms seems to be about right for two F2 layer hops and that one is easily explained.

The signal from IK2JET at 1550kms is more difficult. If it was a few more hundred kms away, I'd be more certain of one F2 hop but it seems a bit close.

It could be Sporadic-E but we're in the middle of February and not the Summer Sp-E season. I did note plenty of other of WSPR signals on the day from the white skip zone around my location.

The signal as noted had some 'fuzz' to it which is unlike a nice clean one hop signal and that might suggest a back scatter or multi-path quality about it.

Sometimes, you just look at the evidence and it's hard to come to any firm conclusion.

In summary... That brings the QRSS tally so far for 2024 up to 12-callsigns & 7 DXCC.

Saturday, February 10, 2024

EI1CAH 40MHz beacon heard in California - 9th Feb 2024

Chris, N3IZN near San Diego in California reports reception of the Irish EI1CAB beacon on 40.016 MHz on Friday 9th of February 2024. Chris was able to decode the PI4 signal from the 8m beacon and as it shows in the graphic above, the signal level was down at -22dB which is well below what is audible to the human ear.

The EI1CAH beacon is located on the west of Ireland and it's 25-watt signal is often heard across the Atlantic in the eastern part of the United States. This isn't all that unusual now that we're near the peak of the sunspot cycle.

The more northern path to California is much more difficult and it's interesting to see a signal at 40 MHz complete the 8,124km path.

Link...
1) For more information on the 8m band, see my 40 MHz page.

Tuesday, February 6, 2024

2024 10m QRSS Challenge: - VA3RYV 6th Feb

As part of a challenge for 2024, I've decided to see how many QRSS signals I could capture on the 28 MHz band during the year. On the 6th of February, I managed to get a good capture of VA3RYV in Ontario, Canada.

The QRSS signal of VA3RYV can be seen in the image above. It starts with a 'Slow Hell' image of the VA3RYV callsign followed by the signal in morse code. The whole sequence lasted about 6-minutes.

Wes, VA3RYV was using 100-milliwatts output power into a have-wave dipole about 15m above ground level. The path length was around 5,255kms and it's likely it was two F2 layer hops.

In summary... That brings the QRSS tally so far for 2024 up to 10-callsigns & 6 DXCC.

10) 6th Feb 2024: VA3RYV

Thursday, February 1, 2024

40 MHz reception report from Bill Smith, W1-7897 for Jan 2024

Thanks to short wave listener Bill Smith, W1-7897 for sending on his reception report for January 2024.

40 MHz reception report from Bill Smith, W1-7897 for January 2024:

3rd Jan 2024 - EI2IP in Ireland, Grid IO52QP heard on 40.680 FT8 calling CQ from 1338 to 1356 UTC. No Answers. Signal strength ranged between -20 and -10 DB.

10th Jan 2024 - EI2IP (IO52) called CQ from 1547 UTC to 1603 UTC. Signal strength ranged from -14 to -20 DB. At 1604 UTC ZF1EJ in the Cayman Islands (EK99) called EI2IP and a QSO resulted with EI2IP at -6db and ZF1EJ at -9db. ZF1EJ then (1606 UTC) worked G9PUV who was not heard here. ZF1EJ then called CQ until 1612 without an answer.

11th Jan 2024 - ZF1EJ(EK99) logged between 1337 and 1341 UTC Calling CQ with no answers. Signal Strength -14 to -18DB.

12th Jan 2024 - ZF1EJ (EK99) called CQ from 1444 UTC to 1518 UTC on 40 MHz FT8 on Jan. 12, 2024. No one answered. Signals ranged from -21DB to +23 DB.

13th Jan 2024 - EI2IP (IO52) logged calling CQ between 1403 and 1411 UTC on 40.680 MHz FT8. No answers. Signal strength -4 to -18 DB.

14th Jan 2024 - EI2IP (IO52) logged between 1624 and 1638 UTC calling CQ. No answers. Signal Strength ranged from -17 DB to 3DB on 40.680 FT8.

15th Jan 2024 - ZF1EJ (EK99) called SV1DH in Greece (KM27) at 1457 UTC with no contact. SV1DH not heard here. ZF1EJ then worked G9PUV (JO00). G9PUV not heard here. ZF1EJ was -18DB. EI2IP (IO52) called CQ from 1610 to 1628 with strength ranging from -20 to 2 DB. EI2IP then worked VA2CYX in Quebec, Canada (FN46). VA2CYX not heard here. EI2IP Worked S59F in Slovenia at 1639 UTC, and 9A5CW in Croatia at 1644 UTC. Unfortunately, I was not at home to shift antenna toward southern Europe so did not hear either station.

16th Jan 2024 - ZF1EJ (EK99) called CQ once at 1426 UTC. No answer. Strength -17 DB; EI2IP (IO52) called CQ at 1805-1807 with no answer; strength -17DB; LX5JX in Luxembourg (JO30) called CQ from 1808-1811 and worked VA2CYX (FN46) at 1812. Strength -3 DB. After both calling CQ between 1813 and 1817, EI2IP and LX5JX worked at 1829 UTC. LX5JX was strength 1 DB. LX5JX called CQ until 1855 UTC with no further answers.

19th Jan 2024 - ZF1EJ (EK99) calling CQ from 1543 to 1546 UTC on 48.680 MHz FT8. No answers. Signal ranged from -7 to 19 DB.

21st Jan 2024 - EI2IP (IO52) called CQ at 1423 UTC Signal Strength -18 DB; at 1517 UTC EI4GEB (IO52) called CQ, strength -14 DB.

29th Jan 2024 - ZF1EJ (EK99) called CQ from 1823 UTC to 1827 with no answer. At 1828 called PJ4MM with no reply. PJ4MM in Bonaire (FK52) was not heard here. ZF1EJ then called CQ until 1839. No answers. ZF1EJ signal strength ranged from -14 to -18 DB.

***

In summary... As can be seen from the map above, the path to the stations in Europe was about 5000-6000kms and was most likely two F2 layer hops. ZF1EJ in the Cayman Islands was about 2700kms to the south and was likely one F2 layer hop. VA2CYX in Quebec, Canada is about 500kms to the north and is too close for F2 layer propagation.

Thanks for the report Bill!

For more information on the 40 MHz band, go to https://ei7gl.blogspot.com/p/40-mhz.html

Tuesday, January 30, 2024

Low VHF Band LIPD Licence in Australia

A lot of countries allow the use of low power transmitters at certain frequencies without the need of a licence. In this post, we'll look at the low VHF frequencies available in Australia with the LIPD (Low Interference Potential Devices) Class Licence.

Why Low VHF? With the annual Summer Sporadic-E season and at the peak of the 11-year sunspot cycle, these very low power transmitters have the potential to be heard over many thousands of kilometres.

Frequency Range - Width of band - Maximum Power - My notes

29.700 to 29.720 MHz - 20 kHz - 100mW or -10dBW EIRP* - This starts just above the 10m amateur radio band

30.000 to 30.0625 MHz - 62.5 kHz - 100mW or -10dBW EIRP* -

30.3125 to 31.000 MHz - 687.5 kHz - 100mW or -10dBW EIRP* -

36.600 to 37.000 MHz - 400 kHz - 100mW or -10dBW EIRP* -

39.000 to 39.7625 MHz - 762.5 kHz - 100mW or -10dBW EIRP* -

40.250 to 40.660 MHz - 410 kHz - 100mW or -10dBW EIRP* -

40.660 to 41.000 MHz - 340 kHz - 1W or 0dBW EIRP* - 1) Note the higher power 2) This overlaps with the ISM (Industrial, Scientific, Medical) band of 40.660 to 40.700 MHz which is implemented in most countries.

54.000 to 56.000 MHz - 2 MHz - 2.5mW or -26dBW EIRP* -

70.000 to 70.24375 MHz - 243.75 kHz - 100mW or -10dBW EIRP* - Note that this overlaps with the 4m amateur radio band

77.29375 to 77.49375 MHz - 20 kHz - 100mW or -10dBW EIRP* -

*EIRP - EIRP means equivalent isotropically radiated power. This is the radiated power from a theoretical point source with the radiation pattern shown as a sphere.

A worked example might be as follows...

Example 1: The antenna is a half-wave dipole with a gain of about 2.1dBi. The coax loss is 1dB. The radio transmitter would need to be limited to about 750 milliwatts to comply with the 1-watt EIRP limit. If the limit is 100-milliwatts then the power should be kept at 75-milliwatts.

Example 2: If a long length of coax was used to feed the antenna and the loss was 2.1dB. This would cancel out the antenna gain and the transmitter can be used at 1-watt or 100 milliwatts depending on the frequency.

Restrictions: Other than the EIRP, there are a few restrictions such as avoiding radio astronomy sites. The licence clause also states... "The transmitter, whether on its own or in operation with one or more other transmitters, must not cause interference to the operation of radiocommunications services" and "A receiver tuned to the transmitter will not be afforded protection from interference caused by other radiocommunications devices."

Experiments: In January of 2023, I had a post up about how radio experimenters were using very low power transmitters on the 40 MHz band and how a 5-milliwatt transmitter reached almost 6000kms. See post HERE

Links: 1) There is a small Facebook group called LIPD class licence beacons in Australia if you want to join.... https://www.facebook.com/groups/1269404663238415

2) If I come across any more low band VHF experiments, I'll keep a list of the posts on my 40 MHz page.

Sunday, January 28, 2024

Results of the 32 MHz propagation tests by EI9KP - 27th Jan 2024

Phil, EI9KP is located in the north-west of Ireland and he carried out a propagation experiment on 32.013 MHz on Saturday 27th January 2024 from 09:00 to 17:00 UTC. He was running 5-watts into a vertical dipole and used FT8 and CW to ID.

And yes, before anyone asks, that's not a mistake. Radio amateurs in Ireland have permission to use 32 MHz.

Report from Phil, EI9KP... "I had my Low VHF antennas bent and broken in storm 'Isha' and am in the process of rebuilding. A few days ago I resurrected my Low VHF Test Dipole. Since there are now no coupled dipoles the test dipole was resonant on 31.600MHz. I measured an SWR of 1.5 on 32.013MHz, it looked like a good opportunity to reconnect the beacon for a day.

I have received the following reception reports (PSKReporter, email, EI7GL blog):"

Europe... These are the stations in Europe that heard the signal...

Gintas, LY2YR in Lithuania (KO24OS) at 2188kms was probably F2 layer

Ari, OH5FI/OH5KUY in Finland (KP41DB) logged several FT8 signals and gave this report...

Fine copy at KP41db.
Max: 240127_105300 22 -0.5 243 DE EI9KP IO54.
Min: 240127_142815 -14 -0.3 242 DE EI9KP IO54
73 / OH5KUY

At 2316kms, the propagation mode was likely F2 again.

Costas, SV1XV in Athens, Greece (KM18UA) at 3045kms reports the following... "I can also receive EI9KP beacon on 32013.0 kHz CW, RST 559, giving loc IO54MB. Time 15:18 UTC, loc KM18." and " I can receive EI9KP beacon on 32013.2 kHz FT8, peaking at -11 dB. Time 15:10 UTC, loc KM18."

Alex, SV8QG in Greece (KM39GC) at 3133kms logged some FT8 signals from 10:52-11:01 UTC. Alex sent on the following decodes...

QRG 32,O12 USB REC IC-7200 ANT 4L@10m QTH KM39GC

105215 -2 -0.3 1201 ~ DE EI9KP IO54
105300 1 -0.5 1200 ~ DE EI9KP IO54
105315 -7 -0.3 1201 ~ DE EI9KP IO54
105400 -1 -0.5 1200 ~ DE EI9KP IO54
105415 -3 -0.4 1200 ~ DE EI9KP IO54
105500 -2 -0.5 1201 ~ DE EI9KP IO54
105515 -7 -0.4 1200 ~ DE EI9KP IO54
105600 -1 -0.5 1200 ~ DE EI9KP IO54
105615 4 -0.4 1201 ~ DE EI9KP IO54
105700 3 -0.5 1200 ~ DE EI9KP IO54
105715 5 -0.4 1200 ~ DE EI9KP IO54
105800 -7 -0.5 1200 ~ DE EI9KP IO54
105815 -8 -0.3 1201 ~ DE EI9KP IO54
105900 -1 -0.5 1200 ~ DE EI9KP IO54
105915 4 -0.4 1200 ~ DE EI9KP IO54
110000 -1 -0.5 1200 ~ DE EI9KP IO54
110015 -9 -0.4 1200 ~ DE EI9KP IO54
110100 -4 -0.5 1200 ~ DE EI9KP IO54
110115 5 -0.4 1200 ~ DE EI9KP IO54

Phil, EI9KP continues... "The morning signals received in OH were extremely strong e.g. +22dB SNR, as was the report from Greece."

The signals to Greece at about 3000kms were almost F2 layer as well. As we look at western Europe, we move into the F2 skip zone.

Hugh, HC02 is a short wave listener in the south of Portugal in IM67BB (1892kms). Hugh writes... "Receiving the beacon - 16 to - 18dB in Portugal IM67 from an easterly direction at 0920 so must be backscatter."

EI9KP writes.. "Many thanks to Hugh for an all day reception report which I have represented in a graph above. Scatter throughout the day with signals -15/-20 dB SNR with a 10 minute peak at around 12:28 UTC."

Paul, G7PUV / G9PUV in the south-east of England (JO00AU - 706kms) writes... "Two decodes here, both likely to be backscatter while I was beaming East.

----- 27.01.24 10:32:30 UTC ---------------

103215 -20 0.4 1140 ~ DE EI9KP IO54

----- 27.01.24 10:45:29 UTC ---------------

104515 -19 0.4 1140 ~ DE EI9KP IO54 "

EI7GL... This is my own report. I used an old HF radio tuned to 32.0124 MHz on USB with a vertical half-wave for 28 MHz. The distance from EI9KP to my location on the south coast of Ireland is 248kms.

The signal was very weak and the screenshot above is going from right to left.

At the bottom around 600 Hz, you can see the trace from the CW signal. I couldn't actually hear this by ear but I could see it on screen for most of the time. I didn't get that many FT8 decodes but the weak FT8 signal can be seen above around 800 Hz.

These are my FT8 decodes from the 8-hour period that I was monitoring the frequency...

090915 -20 -1.7 804 ~ DE EI9KP IO54

131115 -18 -2.1 813 ~ DE EI9KP IO54

133515 -20 -2.1 814 ~ DE EI9KP IO54

140615 -19 -2.2 815 ~ DE EI9KP IO54

161000 -20 -2.6 818 ~ DE EI9KP IO54

161100 -19 -2.6 818 ~ DE EI9KP IO54

165315 -18 -2.5 819 ~ DE EI9KP IO54

165515 -18 -2.5 819 ~ DE EI9KP IO54

165615 -18 -2.5 819 ~ DE EI9KP IO54

165715 -16 -2.5 819 ~ DE EI9KP IO54

165815 -15 -2.5 819 ~ DE EI9KP IO54

165915 -14 -2.5 819 ~ DE EI9KP IO54

170015 -16 -2.5 819 ~ DE EI9KP IO54

170115 -16 -2.5 819 ~ DE EI9KP IO54

170215 -16 -2.5 819 ~ DE EI9KP IO54

170315 -15 -2.5 819 ~ DE EI9KP IO54

170415 -15 -2.6 819 ~ DE EI9KP IO54

170515 -16 -2.6 819 ~ DE EI9KP IO54

170615 -16 -2.6 819 ~ DE EI9KP IO54

As for the propagation mode? At 248kms, it's hard to say. I'm close enough that the signal may have been direct but F2 backscatter can't be ruled out. I'd need to do the test at night to be sure if it was direct or not.

Whatever the propagation mode, I came to the conclusion that I'd need about a 10dB improvement in the signal for me to hear it properly.

North America... These are the reports from the USA and Canada...

Bernard, VA2CY in Quebec, Canada (FN46LW - 4321kms) reported reception at 13:57, 15:01 and 17:02 UTC. EI9KP writes... "Bernard VA2CY is using a 80-meter dipole oriented SW-NE. On 32 MHz this makes an antenna pattern having lobes off the ends."

Andrew, K8EL in Ohio (EN91EB - 5383kms) sends on the following screenshot...

Larry, VO1FOG in Newfoundland, Canada (GN37IN - 3146 kms) reports that the beacon was in from 1230 till switch-off at 1707 UTC.

Larry also took a nice video of the reception...

As heard here in GN37in at circa 0900 local... pic.twitter.com/axxTC2naVI
— VO1FOG (@VO1FOG) January 27, 2024

K8EL in Ohio EN91EB

EI9KP concludes... "It is worth noting that stations VA2CY and K8EL and on the same line viewed from IO54MB. Last reception reports from Europe were at 1520 (Greece) and 1707 (Canada)."

In conclusion... It's nice to see that one experimental transmission on an odd frequency in the low-band VHF region generated so much interest. It's unlikely we'll see any amateur radio activity from other countries at 32 MHz but that doesn't mean people can't experiment and try to listen.

No doubt Phil will be carrying out more experiments on 32 MHz in the future and we'll try and get the word out a few days earlier for the next one.

Link... I have the results of some previous 34 MHz propagation tests up on my 40 MHz page.

Saturday, January 27, 2024

Notice: 32 MHz propagation tests - Sat 27th Jan 2024

Phil, EI9KP is located in the north-west of Ireland and he reports that he will be conducting propagation experiments on 32.013 MHz on Saturday 27th January 2024 from 09:00 to 17:00 UTC.

And yes, before anyone asks, that's not a mistake. Radio amateurs in Ireland have permission to use 32 MHz.

He will be running 5-watts into a vertical dipole and will use FT8 and CW to ID.

Reception reports are welcome.

Friday, January 26, 2024

SDRPlay release new receiver - RSP1B

The UK based company SDRplay have just announced the launch of a new Software Defined Radio receiver product – the RSP1B.

The RSP1B is an enhanced version of the popular RSP1A 14-bit SDR which covers the RF spectrum from 1kHz to 2GHz. The RSP1B comes in a rugged black painted steel case and claims to have significantly improved noise performance.

The RSP1B has the following additional benefits compared to the lowest cost device, the RSP1A:

1. It is housed in a strong black painted steel case.

2. It has significantly improved noise performance below 1MHz (i.e. for MF, LF and below), and in the 50-60 MHz region. There are also noticeable noise improvements in the 3.5-5.5MHz and 250-320MHz spectrum.

3. It has improved signal handling at HF frequencies.

Some consumers don't like the fact that the older RSP1A has a plastic case coated in a conductive coating to screen it and many prefer a more solid steel case. The RSP1B addresses that issue.

I found it interesting that the performance at 50-60 MHz has also improved.

The RSP1B is expected to retail at approximately £106 GBP in the UK or $133 USD (excluding taxes or shipping) for US orders.

Thanks to Brexit, the company can no longer ship to individual consumers in the European Union and has to go through the more expensive resellers network. This brings the price in the EU up to about €153 while the older RSP1A retails for about €133.

I suspect most people will opt for the slightly more expensive RSP1B but the price is now significantly more expensive that other SDR models available in the EU.

For more information on this new radio, please go to www.sdrplay.com/RSP1B

Tuesday, January 23, 2024

Notice: 145 MHz activity event in the UK & Ireland - Sat 27th Jan 2024

On Saturday 27th January 2024, there will be a 145 Alive Event with an activity period on the 145 MHz band in the UK & Ireland. It will run from 13:00 to 15:00 UTC which is 1pm to 3pm local time.

This isn't a contest, it's just an activity period where people will be just testing out what kind of range they can get on 2m FM. There should be a mix of stations on the air, some operating from home and some from high ground.

Some of the locations of the control stations are shown on the map above. Activity will be on the FM channels from 145.225 MHz to 145.575 MHz. The key thing is just to tune around, see who you can hear and give others a signal report.

From the IRTS News... "The UK organisers have arranged for a 145 Alive event to be held on Saturday 27th January between 13:00 and 15:00 local time on 2 metre FM. While there is limited EI participation this time, the IRTS plan to arrange a large 145 Alive event later in the year when weather conditions should be more favourable for outdoor operating. On January 27th, thirty control stations will be on the air in the UK and Ireland, including three in Ireland at Ballybay, Co. Monaghan, Clermont Cairn, Co. Louth, and Watergrasshill, Co. Cork. A further four GI stations will be in action in also. You are invited to please support this event."

Friday, January 19, 2024

2024 10m QRSS Challenge: - TF3HZ 18th Jan

As part of a challenge for 2024, I've decided to see how many QRSS signals I could capture on the 28 MHz band during the year. On the 18th of January, I managed to get a good capture of TF3HZ in Iceland.

On the 17th of January, I had seen the QRSS signal of TF3HZ in between G0MBA and G0PKT so I knew where to look. on the 18th at 12:14 UTC, the signal appeared out of the noise.

This is a good example of how useful QRSS is in that you can 'see' the propagation changing. It shows how within the space of a minute, the path between Ireland and Iceland opened up.

In the next cycle, I got a nice strong QRSS signal and screengrab for TF3HZ.

The path distance was 1576kms so it's hard to know for certain what the propagation mode was. Was it F2 layer? Was it some mid-Winter Sporadic-E? The sudden appearance of the signal is very similar to a lot of the QRSS signals I have seen during the Sporadic-E season but it's not conclusive evidence. I think it's just one of those cases where no-one can be certain which of the propagation modes it was.

In summary... That brings the QRSS tally so far for 2024 up to 9-callsigns & 6 DXCC.

1) 08 Jan 2024: VE1VDM - DXCC #1

2) 10 Jan 2024: VA1VM

3) 15th Jan 2024: G0MBA - DXCC #2

4) 15th Jan 2024: G0PKT

5) 15th Jan 2024: AE0V - DXCC #3

6) 16th Jan 2024: RD4HU - DXCC #4

7) 16th Jan 2024: W1BW

8) 17th Jan 2024: OH5KUY - DXCC #5

9) 18th Jan 2024: TF3HZ - DXCC #6

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