Simple RDS schematic

[sinus trouble]

Great words from the two collegues .Thanks you brothers.

Thank you Radium, I know you have been in the radio game for quite some time!

I will be posting my preferred version of RDS very soon, Just a few issues with sharing software to resolve!

[radium98]

Thank you big bro for the sense of sharing .nice heart man.

[Electronically]

Albert is a good man people should respect if he doesn't share the full information with anyone. The whole idea of Albert's thinking is to give you an idea when he says something you just have to work on the idea he's trying to share with us all. there's always a clue there in his sentences. Got to remember folks Albert needs to protect his business. if he told all of us everything then what would be the point in building etc. we are all here to learn new things share our ideas tips etc. So if he told you how to do it in absolute detail then I'm sure it would be to easy for you. So we should all enjoy the challenges that comes up with new ideas and tips we all learn the hard way I like to lean the hard way if I found it to easy I would be bored Its like a jigsaw solve the puzzle lol.

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[Albert H]

This is just my personal experience but whenever I have spoken to albert in the past, he is just rude, sends you on a wild goose chase, and thinks its funny to mock the "Solder jockeys" for trying to learn and build stuff, forgetting that he himself was a beginner/intermediate once upon a time. He Also forgets that this is a pirate radio forum, it has to be cheap throw away gear, not military spec with precisely calculated antenna arrays.

The "solder-jockeys" that I deride are the guys that learn to copy someone else's design, then sell it as their own work (Hollings is a supreme example of this kind of charlatan). Often these clowns set themselves up as "engineers", building and selling overpriced junk to station owners who know no better.

It's always amusing (and not a little annoying) to find circuits in gear that are an exact copy of my work. Over the years, I found a few sources of parts with unusual values and semiconductors with "house" markings. For example:

I did a run of exciters that used 11k bias resistors in the buffer and doubler stages. The copying solder-jockeys would use 10k in series with a 1k or two 22k in parallel to get the "right" value. If they knew what they were doing, they'd just have measured the bias voltage and recalculated the resistors to use parts they stocked!

I had some "house marked" prescalers and PICs, and made sure that the prescalers were made available - with the "right" part numbers - at £12 each on Ebay. I was buying them for around 60p each, so after postage and Ebay fees I was making around £10.65 per device. If the idiots buying them had bothered to work out what the IC was doing, they would have bought a SAB6456 for around a £1.....

The PICs were "house marked" with four different part numbers for a fruit machine company. I bought a couple of thousand of them for about 10p each. They had firmware written into them, but the code they wrote didn't work reliably, so the company scrapped them - to my advantage! They turned out to be 16F88 devices, hadn't been "code protected", so were perfect for synthesiser control, 19, 38 and 57 kHz generation and display driving. I used them in everything. It must have driven the solder-jockeys mad because I blew the "code protect" fuse in them once I'd written them!

My latest MW synthesiser uses DDS techniques, but is done in a PIC. It makes for a simple, two IC exciter board, with the PIC and a line driver IC. This approach does away with the need for specialist crystals (it all runs from a 20MHz standard rock), and it will generate a nice sine or square wave at any frequency from below long wave right up to the top of the short wave bands in 1kHz steps. A display (LED or LCD) can be connected for display of frequency, modulation depth, PA temperature and so on. I've already found attempted copies of the PIC DDS in Greek transmitters.......

I'm an innovative designer - I have been since the late 1960s. If you want a design for something, I'll be happy to help, but if it uses my proprietary work, I'll want recompense for it!