Category Archives: News

Graeme G4XOF, SK

Graeme G4XOF lost his battle with cancer Monday 26th November 2018.

Here he is last June proudly showing me his mobile HF antenna, mobile mount and describing how it can be used very effectively as a base station antenna. Ever the enthusiast.

Some tributes:

Sad news and he will be missed with his upbeat attitude on the radio to everybody He made the most out of the time he was given – Min G0JMS.

Still a shock even though I knew about Graeme’s condition. He was such a pleasant and helpful person –  Mike G4CDF.

I heard him many times on the local repeaters during my journey to and from work, and his great personality and sense of humour always came bounding over the air waves, often making you laugh out loud. He will be missed. – Simon M0ZSU

Very sorry to hear about Graeme’s passing. A really nice chap to buy  a radio from. Honest and very thoughtful. A pleasure to do business with. – Harry G3NGX

In a multi-way QSO, late comers with the same name as established operators, would add a 02 ident to keep things simple for the life of net. I was always touched and humbled by Graeme 2 referring to me with respect for an old timer  as Graham 1 whatever the situation, eyeball or net. A font of shared knowledge at the informal Rugger Club gatherings. A help with e-bay bulk purchases saving time and trouble all round for the less adventurous net users . He was dynamic, pushing forward with technology , but always could take time out to explain something I did not grasp about new technology , a true gentleman . A great loss to amateur radio. – Graham, G3XYX.

I didn’t know Graeme well which makes this all the more difficult. I wanted to know him better. It feels like we’ve been friends forever which is a measure of Graeme’s warmth of spirit. We always had a laugh whenever we spoke either on air or in person. That said, Graeme knew his stuff. I affectionately knew him as XON/XOFF (https://en.wikipedia.org/wiki/Software_flow_control). He visited me at home last June where we just talked for 20 minutes or so about 5MHz mobile contacts we’d had, the up-and-coming network radio technology and how he used his mobile HF antenna to great effect mobile and at home. We had a drink or two at Reading Rugby Football Club in Sonning during the summer and the last time I saw him was at the Flight Refuelling rally at Wimborne, Dorset in early August with a number of the RADARC crew where the weather was dreadful but he was chipper as ever.  Something to think about, that. A true radio man; one of a kind. I will miss him greatly.

The funeral is on Monday 10th December 3.15pm Reading Crematorium, South Chapel All Hallows Road, Reading, RG4 5LP.

John

G4RDC

Thankyou NADARS for a great Newbury Rally

Thankyou NADARS for all the hard work you’ve put into making this year’s Newbury rally a most enjoyable day especially in the challenging heat. Lots of folk from RADARC enjoyed it including me. Really great to see everyone and the impressive field of stuff, as ever!

73

John

G4RDC

Sharp Resonance: A Low cost Audio filter from Screwfix; mag loop update

Tony Canning G2NF has an intriguing evening lined up for us next meeting:

Thursday 12th October, Woodford Park Leisure Centre, Woodley, 8pm

Some of you will remember his superb talk on ‘Tricks with Coax’.

He states:

“Given my interest in coax related stuff and various tricks, I have been
playing with an audio filter that can give the user with no IF 200Hz
filter a similar tool in a pile up, and like wise for the SSB operator
an audio notch filter. There is no eltrickery, smoke mirrors or power
supply involved. I think its a great resonance demo, as the relationship to coax filters and tuned circuits is uncanny.

Can be made from house hold items or from Wickes / Screwfix or BnQ etc.

This is not about Audio DSP but my simple efforts do appear to offer
comparable performance to some at a fraction of the price but much more fun building and learning.”

Continuing the theme of sharp resonance, I’m trying to twist G2DD’s arm (Loz) into bring along the coax based magnetic loop antenna he’s been working on as I know a few people would be interested in having a go at making something. Or indeed – if you have been working on one feel free to bring it along and tell us what you’ve been up to!

Refreshments to be served as usual with an increasingly wide selection of biscuits of variable age.

73

John
G4RDC

HF Digital Voice (HF-DV) communications by Dr. Alison Johnston, G8ROG

Dr. Alison Johnston G8ROG will be with us on Thursday 28th September to tell us all about the “high quality” voice communications now possible on HF.

Venue: Woodford Park Sports Centre, Woodley, 8pm, as usual.

Modern digital modulation techniques allow more information to be
exchanged in the few kilohertz of bandwidth we typically use on SSB, for example. This enables near-FM quality.

We will cover a bit of theory, the practicalities of interfacing the
necessary computing equipment (maybe even mobile phones???) with (HF) radios and there will be a demonstration using a couple of HF sets.

For me, HF DV is in the true spirit of amateur radio and is an exciting
development as the technology is open to all. If you wish to experiment with the software, you can. As far as I am aware it is not covered by any patents.

Refreshments to be served as usual.

A huge thankyou to Alison for supporting us. Her knowledge of radio is, shall we say, expansive to say the least, as you may be aware. So if you have related queries I’m sure she would be interested to hear them over a cup of tea.

Looking forward to seeing you there.

73

John
G4RDC

The events leading up to and including the Battle of Britain by Chris Wren MBE

Next meeting is on Thursday 14th September entitled “The events leading up to and including the Battle of Britain by Chris Wren MBE”.

Venue: Woodford Park, Woodley, 8pm.
Refreshments to be served as usual.

Chris is the curator of the WW2 underground bunker and museum at RAF Uxbridge built in 1939 some 60 feet below ground. He will introduce personalities of the time including Douglas Bader who had a flying accident not far from the our very own Woodford Park on the Woodley airfield and the most successful fighter squadron at the time.

Churchill visited the bunker during one confrontation and enquired what reserves we had – the answer was “none”.

I look forward to seeing you there to look back on those perilous times and be inspired by those incredibly brave men and women to who we owe so much.

Night on the air Part 2; vintage evening; drinks, 24-Aug 7pm

Next RADARC meeting is at Reading Rugby Football Club, Holme Park, Sonning Lane, RG4 6ST, Thursday 24th August, 7pm.

Given folk seemed to enjoy last meeting “Night on the Air”, we’ll do the same again. The reason it’s billed as “Drinks” is so we all get a chance to relax a bit but with a nod to health and safety, I think we can combine the two.

Feel free to bring along any portable gear to play/experiment with.  There was loads of stuff last time. Just be aware there may be 100W of RF kicking about on HF which delicate equipment may not appreciate if connected to any nearby antenna.

For fun, if you have any vintage/veteran gear you might want to
demonstrate to people (not necessarily radio) feel free to bring it.
Simon ZSU and I like Tilley lamps (i.e. paraffin storm lamps) and one
came out to play last time.

In fact – bring what you like. Even if you think it maybe of no interest
to others. You may be surprised.

Start 7pm but feel free to arrive earlier to help with setup or just
enjoy the evening. NOTE I’m going to start an hour earlier than the usual 8pm as it’s getting dark earlier. Don’t feel you have to be there for that time.

If you are new to the hobby this is a great opportunity to see amateur
radio in action and have a go at operating yourself.

We may also have Woodley air cadets joining us.

Should weather preclude outdoor operations we will meet anyway as the bar will be open.

A huge thankyou to people who brought stuff last time.

Looking forward to seeing you there.

73

John
G4RDC

“Night on the Air” 10th August, RRFC, Sonning Lane

Next meeting is at Reading Rugby Football Club, Holme Park, Sonning Lane, RG4 6ST, Thursday 10th August.

It’s “Night on the Air” so we will have a few stations set up – probably a couple of HF stations. Feel free to bring along any portable gear to
play/experiment with. Just be aware there may be 100W of RF kicking
about on HF which delicate equipment may not appreciate if connected to any nearby antenna.

Start 8pm but feel free to arrive earlier to help with setup or just enjoy the evening.

If you are new to the hobby this is a great opportunity to see amateur
radio in action and have a go at operating yourself.

With luck, we will also have a demo of an “Antenna test range”.

On the military kit side, with luck, we will also have a “Clansman”
dipole and 30-70MHz vertical antenna/dummy load atop. I suspect there will be some other “green” radios on parade.

Should weather preclude outdoor operations we will meet anyway as
the bar will be open.

Looking forward to seeing you there.

73

John
G4RDC

Thursday 27th July – ‘Fix it’ / Alignment evening

Next meeting is Thursday, 27th July, 8pm Woodford Park.

It’s a ‘Fix it’ evening (Alignment evening in old money) so bring along those radio/electronics items needing attention. Even if we can’t fix items on the evening we may be able to work out a plan for them.

I’ll try and make sure we have some test gear available (scope, maybe spectrum analyser, meter etc.)

Computers also welcome – I’ll bring a VGA/HDMI monitor.

As per last meeting, would be great if you can let me know what you’re bringing first but no problem if not.

Even if I have to use many kettles, we’ll do coffee, tea and biscuits. The urn was indisposed last time.