Showing posts with label VHF. Show all posts
Showing posts with label VHF. Show all posts

Wednesday, March 17, 2021

Did a 143 MHz signal cross the North Atlantic back in 1959???


There's a story that way back on the 14th of August 1959, there was a partial trans-Atlantic  contact between two MARS stations operating at 143.950 MHz!

(MARS - The Military Auxiliary Radio System is a United States Department of Defense sponsored program, established as a separately managed and operated program by the United States Army, and the United States Air Force.)

W1REZ in Fairfield, Connecticut was operating under the MARS callsign of AF1REZ and the station at the eastern end of the path was using the call AJ2GA at the Torrejón Air Base near Madrid in Spain.

It is alleged that each station heard the other station and audio recordings are supposed to exist. It was thought that the propagation mode was meteor scatter aided by tropo ducting formed by two high pressure systems over the North Atlantic.

I examined the locations and the path was around 7,800 kms. The date of the 14th of August would certainly tie in with the annual Perseids meteor shower.


Is this one of those stories that when it got retold multiple times, errors crept in and it became essentially like an urban myth?

Or did a VHF signal just below the 2-metre amateur radio band really cross the North Atlantic all those years ago?

Thursday, February 18, 2021

Video: Yagi Antenna talk by Kent, WA5VJB

Kent, WA5VJB recently gave a talk on Yagi antenna construction and designs for the UK Microwave Society and it is now on their YouTube page.

This talk should be of interest to anyone interested in building their own Yagi antennas for the VHF and UHF bands.

The talk lasts for about 38 minutes with a short 10 minute Q&A session after it.

WA5VJB also has his own website which has antennas and equipment for the microwave bands here... https://www.wa5vjb.com/index.html

Monday, February 8, 2021

Video: Unusual signals heard on the VHF & UHF bands with a radio scanner

 


As radio systems gradually migrate from analogue to digital technology, more and more unusual commercial and non-commercial signals can be heard on the VHF & UHF radio bands.

Lewis M3HHY in Manchester has a very popular YouTube channel where he puts up well scripted and presented videos about a wide range of radio related subjects. He recently put up two videos about some of the digital radio signals that can be heard on the VHF & UHF bands.

Video 1... 

Signals...

1) POCSAG ...Wide area paging.
2) MPT-1327 ...Trunk radio communication networks. 
3) Commercial DMR ...digital communications.
4) Car Key Transmitters
5) TETRA ...TErrestrial TRunked RAdio
6) Temporary Traffic Lights
7) Autocab ...Radio dispatch system
8) TPMS ...Tyre Pressure Monitoring Systems
9) Multitone Paging
10) dPMR ...Digital Private Mobile Radio (446 MHz)

Video 2...

Signals...

1) FLEX ...Flexible Wide Area Paging Protocol
2) VOR ...Very High Frequency Omnidirectional Range (108-118 MHz)
3) DAB Radio ...Digital Audio Broadcast
4) DSTAR ...Digital Smart Technology for Amateur Radio
5) NXDN ...Next Generation Digital Narrowband
6) Motorola Type II ... Paging Control Channel
7) Wi-Fi ...802.11N
8) System Fusion ...Yaesu Amateur Radio Digital Mode
9) LTE ...Long Term Evolution Network (4GLT / E-UTRA - Evolved Universal Terrestrial Radio Access). Mobile phone data.
10) AFSK ...Audio Frequency Shift Keying (Paging)

For additional information on unusual signals, visit this website... https://www.sigidwiki.com/wiki/Signal_Identification_Guide

Tuesday, September 1, 2020

Looking back at the first 144 MHz trans-Atlantic reception report of the Cape Verde D4C beacon in 2015

In a previous post, I reported on the first ever trans-Atlantic contact between the Canary Islands and the Caribbean on 144 MHz. As with many other posts, this generated some discussion online and I was interested to read that the first 144 MHz trans-Atlantic report to the Caribbean was back in 2015 by PJ4VHF.

To be honest, I can't remember seeing this before and it's possible that I did read it but forgot about it. As I keep a record of the 2m trans-Atlantic openings on my 144 MHz page, I thought it only right that I should do up a post about it and have a record of it here on the site.

Dave Pederson, N7BHC operated from the island of Bonaire in the Caribbean as PJ4VHF from February 2012 to June 2019. While there, he operated on the 50 MHz, 144 MHz and 432 MHz bands.


The above photo shows the antennas used by PJ4VHF at about 12 metres above ground level...a 5 element Yagi on 50 MHz (M2 6M5X), a pair of stacked 13-element Yagis on 144 MHz (Cushcraft 13B2) and a 43 element Yagi on 432 MHz (M2 43-9WL).

On the evening of the 6th of May 2015, PJ4VHF heard the Cape Verde D4C beacon on CW on 144.436 MHz for about 90 minutes (01:00 to 02:30 UTC). The distance across the Atlantic was 4,694 kms (2,917 miles).


The D4C beacon was running 20 watts into a 5-element Yagi and the CW signal was reported as being 10dB out of the noise.


The video above shows the reception of the D4C beacon on the 6th of May 2015. The morse code message reads... D4C/B HK76MV     DE D4C/B HK76MV

The reception report was subsequently confirmed by QSL card...



From the ARRL News..... Pedersen, PJ4VHF/N7BHC, on Bonaire copied a 2 meter CW signal from the D4C/B beacon on 144.436 MHz at Cape Verde via tropospheric ducting on May 6 (0100-0230 UTC). Bonaire is in the Caribbean just north of Venezuela, while Cape Verde is off the coast of Africa, west of Senegal — a distance of nearly 3000 miles.

The D4C beacon runs 20 W and is about 750 meters above sea level. Pederson was able to confirm the transmission with the beacon operator, HB9DUR. He was using a Kenwood TS-2000 and two 13 element Yagis.

“I had parked my VHF array pointing west for minimum wind resistance,” Pederson told ARRL Propagation Contributing Editor Tad Cook, K7RA. “Tuesday evening [May 5] I was doing some paperwork in the shack and rotated the beams back east at 0100 UTC to prepare for listening all night. To my amazement, I started copying CW while the beam was still 30° off the D4C bearing.”

D4C contest site on top of a mountain on the Cape Verde Islands

Later in June of 2015, NP2X received signals from a German ham visiting Cape Verde one night, and a couple of nights later he was heard by the German visitor on D4, but unfortunately no two-way contact was made.

At the time in 2015, the D4C contest site was unmanned for most of the time but in later years remote operation become possible. The reception report by PJ4VHF showed that a trans-Atlantic sea path by tropo on 144 MHz was possible and this encouraged others to make the effort.

The first trans-Atlantic contact on 144 MHz between Cape Verde and the Caribbean took place four years later in June of 2019.

More details about the various trans-Atlantic contacts on 144 MHz can be found here... https://ei7gl.blogspot.com/p/144-mhz.html

Externals links...

Thursday, May 28, 2020

Digital radio for the Marine VHF Band???

I find it interesting to follow how digital radio is gradually replacing its analogue counterparts.

The Electronics Communications Committee (ECC) of CEPT recently released an article outlining how digital radio could be introduced to the Marine VHF bands.

At present, the allocated frequencies are in the frequency band 156.025 MHz to 162.025 MHz and are mostly FM i.e. analogue.

The channel spacing is 25 kHz which means that there is a lot of spectrum on the band not being used and there is the potential to squeeze a lot more channels in.

In the article, it states that "with the exception of the automatic identification system (AIS) on channels AIS1 (161.975 MHz) and AIS2 (162.025 MHz) and digital selective calling (DSC), currently all the remaining listed channels are used for analogue voice communication. With the digital data exchange allocations in future, some channels will be used for data transfer and not for voice communication any longer. New digital radios need to be developed, which is different equipment than the current voice communication radios. As the result, the frequencies in the VHF maritime mobile band will be shared by four different systems: analogue voice telephony, DSC, AIS and digital data exchange."

There is a huge legacy issue though to overcome first. For a business, they can just swap out the gear and radios when they upgrade from FM to digital. With the Marine VHF band, there is a huge decentralised user base that will take years to change over.

The article suggests the use of DMR (dPMR) as introduced in recent years on the amateur bands..."The technical candidate solution is dPMR (digital Private Mobile Radio) – a technology currently used in land mobile communications as a replacement for analogue FM voice communication in both VHF and UHF bands. dPMR has been standardised by ETSI, the European standards organisation."

The article suggests that initially, the new digital channels which take up 6.25 KHz and these would fit between the existing analogue FM channels as shown below on the left.
Eventually the FM channels would be phased out and be replaced with all digital (above right). The end result would be a doubling of the number of channels on the Marine band.

It not hard to imagine perhaps a transition period where dual mode (FM & DMR) radios would exist and then there would have to be a date whereby everyone would need to changed over to digital.

In tests done in Estonia, they reported..."Participants in the test were generally positive about the introduction of digital communication with the range being the same (or better) than the range for analogue communication. At the maximum distances, the digital communication remained understandable (d = 19,6 NM) while the analogue communication experienced very high noise and was not understandable."

In the tests done in the Netherlands, they reported..."The users and the observers found the digital voice quality the same or better than the analogue one. The users reported back that listening to digital voice with noise reduction made it easier and less intensive to listen. The users concluded that the digital transmission of voice enabled the same functionality of operation of the ship as for an analogue radio system."

Full article... http://apps.cept.org/eccnews/may-2020/index.html

Wednesday, September 12, 2018

Russia proposes to use DRM on 65.9-74.0 MHz


On the 11th of September 2018, it was reported that the Russian Federation proposes to use the digital DRM+ standard for broadcasting on the  the radio frequency bands 65.9-74 MHz and 87.5-108 MHz.

While this move may not have much of an issue here in Ireland, it has the potential of being a major source of interference to radio amateurs using the 4 metre band (70 MHz) in central and eastern Europe. As 'Secondary Users' of this part of the spectrum, radio amateurs have no choice but to live with any interference, especially during the Summer Sporadic-E season.

The 65.9 MHz to 74 MHz spectrum has been used up to now for analogue FM transmissions in Russia and some adjacent countries. Over the last 20 years, the general trend has been to close these low band VHF transmitters and move them instead to the usual 88 to 108 MHz band. It seemed as if the 65.9 to 74 MHz band might eventually close but this new digital DRM allocation will see it being put to a new use.

This highlights the fact that while extensive parts of the low band VHF spectrum were allocated to the Amateur Radio Service in Ireland, that is very unlikely to happen elsewhere in Europe.

From Google Translate...

Friday, July 13, 2018

IRTS release updated band plans for 40 MHz and 60 MHz...



Back in April of 2018, the Irish Radio Transmiters Society (IRTS) announced that Irish radio amateurs had gain access to a huge swathe of the VHF spectrum from 30 to 70 MHz.

In May, they released a proposed band plan with an invitation for comments.

Based on the feedback received, the IRTS have further refined the band plan and it can be seen HERE

While the band plan covers quiet a lot of spectrum, the IRTS considers the key areas to be 40-42 MHz for the 8-metre band and 58-60 MHz for the 5-metre band.

From the document....."IRTS considers that the band most likely to be transverted to an IF of 28 – 30 MHz might be 40 – 42 MHz." ... "Similarly to 40 MHz the band most likely to be transverted to an IF of 28 – 30 MHz is considered to be 58 – 60 MHz."

They are inviting comments before the end of July 2018.

Links...
1) New proposed band plan (v6) ...link may break in time
2) Copy of new proposed band plan (V6)
3) My 40 MHz page where I keep some information

Sunday, May 20, 2018

IRTS release proposed band plans for 40MHz and 60MHz


The Irish Radio Transmitters Society have just released their proposed band plans for the new VHF bands around 40 and 60 MHz. The following item was in the IRTS news on Sunday the 20th of May 2018....

*****

Spectrum News
Following a spectrum award by ComReg the entire 4m band (69.9 - 70.5 MHz) is now available to Irish licensees.

At the last IRTS Committee Meeting a sub-committee was convened to develop band plans and propagation beacons for additional spectrum included in the spectrum award.

IRTS is now consulting amateur licensees on two band plans covering 40 - 44 MHz and 54 - 69.9 MHz. More details including draft band plans can be downloaded from the IRTS website, www.irts.ie/downloads

Please send any comments as soon as possible to “newspectrum /at/ irts /dot/ ie” to arrive not later than 30th June 2018.

*****

At present, there is a Danish beacon on 40 MHz while the UK one is non-operational. Slovenia has an allocation for a beacon band at 40 MHz but have no beacon on this band. South Africa is the only country outside of Ireland to have a allocation for users at 40 MHz.

There is currently no active beacon on 60 MHz as the UK one is non-operational.

A copy of the proposed band plan is shown below...


Sunday, April 29, 2018

Irish radio amateurs gain access to huge swathes of the VHF spectrum

The Irish Radio Transmitters Society announced today in their weekly news that Irish radio amateurs are to gain access to a huge part of the low band VHF spectrum.



EI stations will now have access to 30 to 49 MHz...all 19 MHz!!! The spectrum from 54 to 69.9 MHz has also been allocated... another 16 MHz! All of this is on a secondary basis and a 50 watt power limit.

Over the years, it's usual for the IRTS to lobby the licensing authority to get access to a small band here and there but not on this scale. I'm still assuming it isn't a mistake as the information on the Comreg website has been verified in the IRTS news. It may well be possible that it may in time become more defined as two distinct bands in the 40 MHz and 60 MHz region but for now, you can see the allocation as per the Comreg website shown above.

IRTS News...
Additional Frequencies
In December 2015 ComReg published a Draft Radio spectrum Management Strategy 2016-2018. The Society responded with a comprehensive submission to this draft and a summary of this was published in the March 2016 edition of Echo Ireland.

In June 2016 ComReg published its final Radio Spectrum Management Strategy 2016-2018 and indicated its intention to grant some additional spectrum to the amateur service. This has now been done and is in line with some of the requests made in the Society’s submission.

The 70 MHz band has been extended to 69.9 MHz to 70.5 MHz. This is an increase of 275kHz over the existing band of 70.125 to 70.450 MHz and is the full band that may be allocated to the amateur service under the European Common Allocations table.

Further spectrum covering all modes including digimodes has been granted on a secondary basis at 30 to 49 MHz and 54 to 69.9 MHz. The latter band also includes digital television in addition to all other modes. These new frequency bands are listed among the bands available generally to radio amateurs in Annex 1 of a recently revised version of the Amateur Station Licence Guidelines document ComReg 09/45 R4 which is available on the ComReg website.

The new bands in the 40 MHz and 60 MHz regions will, among other things, facilitate modern type beacons in the region of these frequencies as well as moving the existing 70MHz beacon on 70.130 MHz to the section of the band designated for beacons.

IRTS will be producing a local band plans for these two bands in consultation with countries that have allocations at these frequencies and IARU.

The Society would like to express its appreciation to ComReg for the release of this extensive spectrum to the amateur service on a secondary basis.

Source : IRTS News - 29th April 2018

Subsequent news item from the Royal Society of Great Britain (RSGB)..."In a landmark step, the Irish regulator Comreg has agreed to amateur access, on a secondary basis, to an extensive amount of VHF spectrum including 30-49MHz and 54-69.9MHz. In addition, their existing 4m band has been widened to the full 69.9-70.5 MHz CEPT range. It is expected that this will facilitate a number of innovative developments, including digital amateur television and new or realigned VHF propagation beacons. The RSGB congratulates its IRTS colleagues on their success, which dates back to a 2016 consultation input."

Tuesday, December 20, 2016

UK Radio Spectrum Review Shows Increased Noise on VHF Bands


Ofcom is the organisation that is responsible for radio regulation in the UK and they have just released a document for a review of the UHF spectrum from 410 to 470 MHz. While most of the report covers the UHF spectrum as expected, they do make a reference to the increase noise levels on the lower VHF bands.

In the chart below, 'Band 1' covers 55 to 68 MHz while 'VHF Low' covers 68 to 87.5 MHz.


In the past, the assumed noise floor for radios was -116dBm and the planned coverage area of a radio system was -104dBm, i.e. 12 dB over the noise floor.

What Ofcom have found is that the actual noise floor is currently 12dB higher than previously thought. As a result, the planned service signal level must now be -92dBm.

This higher noise level is likely due to a variety of sources. Just think of the extra electrical power lines, increased use of switch mode power supplies in electrical equipment and the vast multitude of computer and IT systems. Taken all together, they result in a large increase in electrical noise especially in urban areas.

What this means for amateur radio is that bands like 4 metres (70 MHz) and 6 metres (50 MHz) are likely to be much noisier than they used to be in the past. Higher VHF and UHF bands are not effected as badly. It's likely that the extra noise levels also extend down to the higher HF frequencies like 14 to 28 MHz as well.

This higher noise floor as announced by Ofcom is in contrast to what was said by Comreg, the Irish licensing authority. In response to a submission by the Irish Radio Transmitters Society, they said the following in a report published in mid-2016....

2:17 ComReg notes that no evidence was provided by the IRTS to support its assertion that the noise floor is increasing and, further, ComReg observes that its monitoring activities do not indicate a significant increase in the noise floor on the whole;

Perhaps the noise levels in the Ofcom report are based on the very large urban areas in the UK but it's hard to imagine that the noise levels haven't increased substantially in the various Irish cities and towns in the last 20 years.

Links...
1) Ofcom Strategic Reeview of UHF Band 1 and 2 410 to 470 MHz
2) Comreg Radio Spectrum Management Strategy 2016 to 2018

Friday, January 16, 2009

Video clip from EI/ON5GS/P in IO55 square...


In some previous posts(here & here), I had some information about ON5GS's 144 MHz meteor scatter expedition to IO55 square in Dec 2008. I recently came accross a video clip of his on YouTube. I think the sound of the wind and the snow on the mountains say a lot about the bad weather conditions.


Sunday, December 14, 2008

EI/ON5GS/P in IO55 square QRT???

I have been checking how this expedition has been getting on over the last few days and it seemed like he was getting lots of contacts into Europe on 144 MHz via Meteor Scatter. ON5GS seems to have set up near Muckish Mountain which is shown on the map below. The location selected seems to be on the high part of a small road that goes between the mountains. It seems as if the highest point is perhaps 100 metres or so inside IO55 square!! It seems like a good spot though....about 250m asl and no major mountains blocking the horizon to the South-East.


However on Sunday, it seems like the expedition came to a halt when the antennas fell over in the wind. The winds on Sunday morning were from the North-West and this site looks like it might be very exposed in that direction.
Here are some of the comments from ON4KST chat.....

"LATEST NEWS from DXC 2008-12-14 1039 UT: <<<>>>> Heavy storm has blow over his mast. Antennas crashed. Dirk went QRT"
"well too bad for EI/ON5GS/p: I thought Dirk would make it to the end and would not join the list of blown away DXP's in IO55"
"Dirk, ON5GS, was qrv serveral days from his "berlingo" shack with 4x4el vert stacked antennas. At Dec.14 10.39UTC Anton ON6NL reported: EI/ON5GS/P is QRT! Heavy storm destroyed his antenna"

Some details of the Expedition can be found at http://www.on7kei.be/forum/viewtopic.php?f=25&t=244 and on my earlier post.

Is he QRT for good??? ON5GS is supposed to be there until the 20th. Even if all of the antennas were destroyed, there are some radio shops within driving distance so maybe not???

Update.......(18/12/08)

Now QRT. More info on what was worked at http://www.mmmonvhf.de/showblog.php?ca=EI-ON5GS-P

Update...21:00 (14/12/08)
Back in action......but this time in IO65 square.
SP6NVN 144385.0 EI/ON5GS/P io65jg jo81cj 1609 km Tnx D 2007 14 Dec
SP2MKO 144385.0 EI/ON5GS/P tnx for new loc / vy73 1959 14 Dec
F1DUZ 144385.0 EI/ON5GS/P IN97NJ<>IO65 TNX new loc again 1957 14 Dec
DF8IK 144385.0 EI/ON5GS/P io65jg-jo30 tnx 1950 14 Dec

Here are some of the other spots from the DX-cluster....(Blue=Tropo)
ON6NL 144385.0 EI/ON5GS/P QRT! Storm blow antennas away 1043 14 Dec
G4ZFJ 144385.0 EI/ON5GS/P JO01HOIO55XA 55 FSK 0929 14 Dec
F1DUZ 144385.0 EI/ON5GS/P WRONG frequ b4 0920 14 Dec
F1DUZ 144352.0 EI/ON5GS/P IN97NJIO55 TNX so 73 0914 14 Dec
DF0WD 144385.0 EI/ON5GS/P io55xc>jo42 fsk,fb 20sec burst 0850 14 Dec
I4XCC 144385.0 EI/ON5GS/P tnx new square! #543 2248 13 Dec
PE1OPK 144385.0 EI/ON5GS/P JO23IO55 thnx new# Good Lu 2223 13 Dec
PA3DOL 144385.0 EI/ON5GS/P Many thanks for new # 27/27 C 2148 13 Dec
HA5UK 144385.0 EI/ON5GS/P jn97-io55 2061km tnx 2124 13 Dec
DK7DR 144385.0 EI/ON5GS/P jn47dpio55 3min tnx 2104 13 Dec
OE3SJA 144385.0 EI/ON5GS/P sorry not finish...chaos ! ! ! 2019 13 Dec
OE3SJA 144385.0 EI/ON5GS/P in qso only....chaos... 2008 13 Dec
SP6NVN 144385.0 EI/ON5GS/P tnx qso 1944 13 Dec
OZ8ZS 144385.0 EI/ON5GS/P CR IO55JO55 Tnx # and GL 1937 13 Dec
IZ5ILX 144385.0 EI/ON5GS/P JN54<> IO55 TNX QSO !! 1930 13 Dec
EA6VQ 144090.0 EI/ON5GS QRV for you. Tnx 1726 13 Dec
DF6YL 144385.0 EI/ON5PS/P tnx for new# io55jo31gl 1650 13 Dec
OH6PA 144385.0 EI/ON5GS/P TNX 4 New # best 940/8 1554 13 Dec
DF4IP 144385.0 EI/ON5GS/P TNX FR QSO 1252 13 Dec
DG5AAG-@ 144385.0 EI/ON5GS/P tnx qso & new square 1227 13 Dec
DK1VI 144385.0 EI/ON5GS/P JN49HHIO55XA 26 TNX QSO 1200 13 Dec
EI5FK-@ 144385.0 EI/ON5GS/P IO55XC 52/57 tropo tnx 1128 13 Dec
DF8IK 144385.0 EI/ON5GS/P io55-jo30 tnx qso 1104 13 Dec
DF1SO 144385.0 EI/ON5GS/P IO55JN48 C 1800/12 tnx 1055 13 Dec
HB9DFG 144385.0 EI/ON5GS/P JN37SMIO55XC CR 5dB/560ms 1031 13 Dec
DJ5BV 144385.0 EI/ON5GS/P IO55JO30 good refl tnx 1012 13 Dec
DG5CST 144385.0 EI/ON5GS/P gd refl. io55/jo60 gl! 0942 13 Dec
PE1GUR 144385.0 EI/ON5GS/P tnx random qso IO55<>JO22, 2142 12 Dec
PA1VW 144385.0 EI/ON5GS/P Tnk new #, 140/2 2107 12 Dec
SP3IYM 144385.0 EI/ON5GS/P new #188 without SMS/chat pwr 1908 12 Dec
OK1TEH 144385.0 EI/ON5GS/P CR jo70-io55 #520 tnx! 1845 12 Dec
F5JNX 144385.0 EI/ON5GS/P Best 780/4db tnx new # 1836 12 Dec
PA3CEE 144385.0 EI/ON5GS/P MS IO55 Tnx loc. #705! 1809 12 Dec
OZ1IEP 144385.0 EI/ON5GS/P new loc. 1725 12 Dec
DF2ZC 144385.0 EI/ON5GS/P sri typo 1717 12 Dec
DF2ZC 144305.0 EI/ON5GS/P IO55JO30RN tnx #906 1714 12 Dec
OZ1BNN 144385.0 EI/ON5GS/P TU fer new grid GL. 1653 12 Dec
DL1RPL-@ 144385.0 EI/ON5GS/P tnx MS QSO 73 GL 1440 12 Dec
DL1EAP 144385.0 EI/ON5GS/P IO55JO31 C tnx dirk 4new# 1159 12 Dec
SP2MKO 144385.0 EI/ON5GS/P tnx for new loc 1048 12 Dec
DG5AAG-@ 144000.0 EI/ON5GS/P 384 or 385 ??? 1031 12 Dec
ON7KEI 144385.0 EI/ON5GS/P FSK441 sket elinknode 7125 0917 12 Dec
I2FAK 144385.0 EI/ON5GS/P JN45io55 tnx for new# 2049 11 Dec
ON4KHG 144385.0 EI/ON5GS/P IO55XAJO10 2037 11 Dec
DF6YL 144385.0 EI/ON5GS/P tnx new# jo31io55 2029 11 Dec
DL1SUN 144385.0 EI/ON5GS/P norm refl, c, #563 1941 11 Dec
SP6HED 144385.0 EI/ON5GS/P JO80ILIO55XA tnx random qs 1921 11 Dec
ES3RF 144385.0 EI/ON5GS/P CR ko29IO55. 2011 km 1834 11 Dec
DH4FAJ 144385.0 EI/ON5GS/P JN49EXIO55XC 480/d tnx Dir 1818 11 Dec
SP2JYR 144385.0 EI/ON5GS/P 1760km with 50W - Tnx Dirk ! 1755 11 Dec
PA1GYS 144385.0 EI/ON5GS/P Tnx qso jo22
PA4PS 144385.0 EI/ON5GS/P Tnx new# JO33ghIO55 1725 11 Dec
PA3FPQ 144385.0 EI/ON5GS/P io55 tnx new #. FB refl. GL! 1657 11 Dec
PA4EME 144385.0 EI/ON5GS/P CR JO20WXIO55XA tnx new # 1640 11 Dec
G4PBP 144385.0 EI/ON5GS/P MS from io55xc 1613 11 Dec
G8GXP 144370.0 EI/ON5GS/P IO55IO93 59 450KMS TNX 1610 11 Dec
G4PBP 144370.0 EI/ON5GS/P 5/5-9 tropo in io82wo 1607 11 Dec
SP6NVN 144370.0 EI/ON5GS/P io55xcjo81cj TNX 1601 11 Dec