Comments by "Chris Cain" (@buffplums) on "The Police Thought Their Radio Was Encrypted... It Wasn't" video.

  1. I’m an ex RAF comms tech and I designed a concept system used for training at the RAF Cosford No1 Radio School which mimicked the principle of frequency hopping. My demo used DDS tech as opposed to older school PLL with its slow capture time. It always amazed me how much money the government were screwed for new tech … yes of course it’s expensive to develop, design and manufacture from scratch, plus Britain had become Stone Age in the running for new innovation .. it just used to frustrate me having the ability to knock something up in a relatively short time a very simple but effective technique. I mean the system could be implemented using existing off the shelf hardware that was already in place you’d just need to modify the base stations with a simple processor synced to an accurate time source from GPS and modification to any synthesised analogue handheld transceiver adding a small SM PCB with a GPS receiver, embedded controler and a bus path to the synths divide by N counter. Yeah probably a little bit of work but nothing beyond a team of reasonably switched in techies to install. If anyone fancies having a look at what I did click on my “face” and scroll to the bottom of my videos , there’s a load of crap in there but you will see my DDS freq agile transceiver that I knocked up back in 2010 ish … even with the demo I did with just 10 frequency’s and very predictable sequence code and 1 second hop, you can see it wouldn’t take too much effort to have a fairly secure system… yes of course having a wideband receiver might recombine all of the channels … but just a thought it was an interesting experiment and it was only for training our techies and slow enough for them to easily see what was going on.
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  2. But by the way fantastic channel mate, your knowledge is brilliant. Wonder what your background is, what you did
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  3. I remember once going on an HF Chirpsounder course at a company called Marlborough Communications … can’t say what else they did there but it was a bit like visiting Qs lab… plus the staff Wee a great laugh and used to take us out to lunch each day. Before we went out we had a weigh in and when we got back we had a weigh in once again. You weren’t allowed to go for a shit or a piss until after the weigh in. Whoever had the overall net gain in weight won a big box of Choo Olathe at the end plus a special certificate 😂 I miss those sort of laughs and also working to component level on radio kit as a maintainer in the RAF and even working to sub system level A/B a on a mobile radar system was still interesting enough to maintain … where the hell has Britain gone … we are last in everything these days
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