Video: The history and appreciation of Morse... by GI4ONL

The Mid-Ulster Amateur Radio Club recently posted a video on their YouTube channel titled 'The history and appreciation of Morse...With Victor Mitchell GI4ONL'

The video can be broken down into three parts...

00 to 33 minutes - The first part deals with the the history of morse code and deals with the origins of terms like CQ, 73, 88, the various Q-Codes, SOS, Mayday and some terms that are still in use today on the marine bands.

33 to 47 minutes - How to learn morse code properly.

47 to 90 minutes - Questions & Answers

QRP-Labs release a 50 watt amplifier for their CW QCX Transceiver

The QCX cw transceiver from QRP-Labs is one of the most popular kits for radio amateurs on the market and sells for just $49. It comes in single band versions from 80m to 17m. Earlier in 2019, they sold their 8,000th kit which just testifies how popular this little 5 watt radio is.

QRP-Labs have now announced that they are releasing an accompanying amplifier which is capable of 50 watts.

Some of the key features...
Designed for the QCX CW transceiver kit

Up to 50W power output on 40m with 20V supply, falling to around 25W at 13.8V supply
50-ohm input and output
Fast clean solid-state Tx/Rx switching provides full break-in operation (QSK)
Can be built for one of 40, 30m or 20m bands with the supplied components (or other bands with suitable choice of Low Pass Filter components)
Uses two low-cost IRF510 transistors as the power amplifier in push-pull configuration
Recommended amplifier operation in Class C (Not suitable for SSB)
On-board 7-element Low Pass Filter for harmonic attenuation
Standard inexpensive components throughout (easy to replace)

The chart below shows how the output power is dependent on the supply voltage and the frequency.

The price of the amplifier is just $29.50. There is also an optional enclosure for an additional $16.

For more info, go to https://qrp-labs.com/50wpa.html

Award Cert for the Wild Atlantic Way Award

On Friday the 17th of February 2017, I worked EI11WAW on 80m cw and this was the last one that I needed for the Wild Atlantic Way Award.

According to the awards manager Dave EI6AL, over 70 certificates have been issued at this stage and this was the first one to an EI station.

It's also the first one that has been endorsed for all contacts on CW as this wasn't available up to now. The other endorsements available from now on will be for SSB and Digital.

These are the bands that I used to contact the 9 WAW stations...

EI11WAW...CW...80m
EI22WAW...CW...20m
EI33WAW...CW...80m
EI44WAW...CW...80m
EI55WAW...CW...20m & 40m
EI66WAW...CW...80m
EI77WAW...CW...17m, 20m, 40m & 80m
EI88WAW...CW...20m
EI99WAW...CW...20m, 30m & 80m

What has been interesting about looking for these stations on the HF bands over the last 7 weeks is that I actually learnt something about propagation.

1) I had assumed that I could work EI stations on 80m at almost any time. That wasn't the case. With a low solar flux and the daytime critical frequency only getting up as high as 5.5 MHz, the MUF at night dropped pretty low. This had the effect of creating a skip zone on 80m so that I couldn't work other EI stations that were too close.

2) I had assumed that working other EI stations on 20m or 17m would be very difficult. I'm not sure if it was weak Sporadic-E or F2 backscatter but I could often hear the WAW stations on 14MHz and 18 MHz. The signals were pretty weak....down at a kind of level where a contact was possible on CW but not on SSB.

Overall, it looks like it is a very successful awards scheme and is certainly getting a lot of interest. If 70+ stations have already applied for the award after just 7 weeks, then surely that figure will be in the hundreds by the time the award scheme finishes at the end of 2017.

More info about the Wild Atlantic Way Award in this previous post.

Morserunner...a CW contest simulator

An 18 month absence from the radio hasn't done much for my CW skills. At first, very rusty yet after a few minutes, it starts coming back. I guess it's a bit like learning to ride a bicycle, one you can do it, you never forget.

As well as listening to CW on the various bands, one of the ways to brush up on your CW is to use a contest simulator.

I came across Morserunner a few years back and it's a novel way of listening to morse. It basically simulates operating in a CW contest and you just use the function keys on the PC keyboard to control everything. As it is all off-air, there is no pressure and you can make as many mistakes as you like.

ARRL 10 Metre Contest...13th/14th December 2008

Considering that this is the only band I am really currently active on, I was on during the 2 days of this ARRL contest to see what would pop up. At this stage of the solar cycle, the solar flux level (~70) is way too low to support direct F2 propogation from this far North in Europe (52 deg N). However, some Winter time Sporadic-E came to the rescue and there were short weak openings to F and EA from here. It's amazing that when all that activity is concentrated on one band, every propogation path becomes obvious and is spotted on the DX-Cluster. Most of the signals were weak although one French station did peak at 599+10dB. However overall, most signals were weak and CW was really the only way of working most stations.

Some observations...

1) In total over the 2 days, I worked 7 EA stations, 3 F stations and 1 S5 station. There might have been some openings to Germany as well but either I was missing or it was too weak for me to hear. The band opened up for a while to LA as well with the beacon LA4TEN in JO28 making an appearance for a while. No LA stations were heard though. In terms of DX, V51AS was heard although very weakly.

As you see from the map, the orange areas represent was worked....all Sporadic-E and about 1,000 to 1,800 kms distance. The V51 station was probably a combination of both Sporadic-E and F2 layer propogation. Sporadic-E from here (IO51) to Spain and from there probably by F2 to V51.

2) This year, the contest coincided with the peak of the Geminids meteor shower. I heard plenty of pings from beacons over the weekend and no doubt, a good few contacts made by stations in the contest may have been due to meteor scatter whether they realised it or not!

3) On a personal level, several years off the radio didn't do much for my CW!.........Oooo........very rusty ;o)

4) After I worked the S5 station, I heard Robbie, EI2IP working him. Later that night I noticed that Robbie had put up the following spot on the DX Cluster

EI2IP-@ 28000.0 EI7GL John ur cw tone is not so clear! 1215 14 Dec

So, I turned on a 2nd reciever with no antenna attached and listened to my signal on 5 watts....

di...di...di...dah.....di...di...di...dah........sounds ok........Turned up the power to 50 watts.....

ch...ch...ch...chirp.....ch...ch...ch...chirp.......Oooooo......Not so good!! :o(

It reminded me of when back in the days when the Soviet Union existed and a lot of the stations there were using home made rigs and plenty would have a chirp on cw.

How to fix my problem??? I thought at first it might be too much RF in the shack. I know I cause interference to the loudspeakers of the PC in the shack so I thought that might have something to do with it. Perhaps RF was getting into the power supply or somewhere else.

Connected up my 20 year old home brew 100 watt dummy load and tried it...

ch...ch...ch...chirp.....mmm.....no joy. Then I looked at the power supply. It's a variable power supply going from 0V to 20V with a small analogue meter to show the o/p voltage and current. Looked a bit low.......mmm......checked it with a digital volt meter.....~11 volts!

Turned it up to 13.5 volts and tried again...

di...di...di...dah...success!!...........It turned out that I must have knocked the voltage dial at some stage and the Kenwood transciever didn't like transmitting with a low voltage supply. Not only that but my max power out now has increased from 80 watts to the full 100 watts.

All from a simple spot on the cluster!....Thanks Robbie :o)

5) .....and on a final note, I found myself listening nearly all the time on the CW part of 10 metres for the duration of the contest. I listened to the SSB section for a while, heard some weak signals but to be honest, I never felt inclined to open the drawer, take the microphone out, plug it in to the rig and call someone. I wonder if I was operating just SSB only, would I just get bored of the whole radio thing again???

Morse is sooo hard to learn....

Morse Code V Mobile Phone Texting

Came accross this on YouTube....