News

target-nite-glassesMore in-depth reports on….

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There’s a lot going on at TARG; so here’s a summary:

The training dates have been released:

  • Foundation: (one weekend) 16/17 February
  • Intermediate: (two weekends) 27-28 April and 4-5 May
  • Foundation: (one weekend) 20/21 July

TARGet Nite 15th February 2019

Many events taking place at the same time. Here’s a sample.

CW tableFollowing the success of two TARG members getting on the air for the first time using CW at last week’s CW-net; the Morse table was busy with 5 (not all shown) topping up their skills ready for next Friday.

On another table was 1-2-1 Maths tuition, this week covering how the calculator’s exponential button can make easy work of dealing with very big numbers and very small numbers.

Photo of TARGet niteThe Mag Loop was in operation with live data being fed to a SDR display. This supported the 8 people who took an interest in a presentation on how AM demodulation works in real-life (rather than the abridged version) in a crystal circuit. Get Download from our TARG Tips Page

There was help on hand with setting up a HF rig using the permanent antennas at the club and a dummy load.

Unable to be present this evening, but getting a mention in RadCom and demonstrated at a previous club meeting is Andrew M0ONH’s Repeater Time Out Kit: https://hamtronics.uk/ .

Gary M0ICG

Club Meeting 1st February 2019

Ever heard a strange signal on the radio and wondered what it is? Club member, Gary M0ICG, demonstrated his detective skills at the club meeting in February. He played a typical sound found on air and then set about tracking it down.

The crux of the technique was to freeze the pattern of the radio signal on the waterfall display and then check it against a database of waterfall displays on www.sigidwiki.com (signal identification wiki) to find a match. Some people haven’t looked at a waterfall display in close up, but when they do they’ll begin to recognise a pattern of lines, dots and dashes spread over the bandwidth of the transmission.

Photo of raffle prizeA comparison with the database will identify the source. The visual identification is supported by comparing the audio too. There are other techniques, but part of the “fun” is being persistent when a match is difficult to find. 

Must also mention the raffle prize. TARG prides itself on having useful prizes and they often relevant to the presentation. This month was no exception. The top prize was a “Nooelec USB SDR Dongle” covering the range 24-1900 mhz” (photo); and the second prize a mag mount, with other prizes on offer too.

3 photosTARget Nite: 19th Jan 2019

The first TARGet Nite (practical radio projects) of the year was, as usual, very well attended (top photo). Two examples of what we did:

1-2-1 mentoring for the Advanced Exam. The idea is that candidates identifies the areas where they could do with help and we will find someone in the club with the technical knowledge and teaching skill to help them. Picture shows Nigel M0ICH helping Eve 2E0EVN with some awkward maths formulas. In the exam there will always be a calculation of some sort and provided you follow a step by step process then it can be an easy point.

Alan 2E0FBP brought along a HF transmitter he had built. A great achievement. The middle photo shows the inside of the BITX circuit board which he had put together inside a 3D printed container, then the whole lot went inside a carry case. Just to prove it worked he used both a Clansman adapted Morse Key, and a microphone, to transmit on 40m and we heard the reception on a separate radio.  Alan would be very pleased to talk people through what he did. For more information; follow this link: www.hfsignals.com/index.php/ubitx

Also on display was home-brew CW transmitter. More on that next time.

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