DIY FM board

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ShakyMcQuiver
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Re: DIY FM board

Post by ShakyMcQuiver »

I know this thread is a bit dated, but is there a web site I can order that FM board?

Thanks,
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cb4ever104
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Re: DIY FM board

Post by cb4ever104 »

Hi .

You can find the kit here :

http://www.spectrumcomms.co.uk/CB_Kits.htm

(FM455 FREQUENCY MOD-DEMOD)

Cheers
30TM060
Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.
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dt307
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Re: DIY FM board

Post by dt307 »

i just did a review of a fm board by recoil a member here as i am a tester / give feedback for him
works great and cheaper than specky ones and prebuilt,not sure if he is in a position to sell to the masses yet but may be worth sending him a pm if any body needs one,
i have a 2000gtl going to get one of robs boards and a maurer module in the new year
163dt307-chris




“I fear the day that technology will surpass our human interaction. The world will have a generation of idiots.”
― Albert Einstein
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163TM847
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Re: DIY FM board

Post by 163TM847 »

A few months too late now, But

Remember when installing spectrum board into an SSB radio to add a 10n [103] cap across pins 2 and 7 of the 741 op amp otherwise you will get a "rushing" noise on TX audio, And also the +TX for the TX audio circuit has to be switched off when on SSB or you will get a howl on RX when volume is turned up as the board was not designed for SSB radios, This is why i change the 3 way mode switch to a 4 way as there are enough pins to switch certain things on and off.

I have had the Uniden FM board PCB cloned [Madison/Stalker XX] and i usually only use these in Uniden radios.

DSC00641.JPG

For anything else i just knock one up on a bit of vero, Its only for me so im not that concerned about getting a PCB etched but i may get it done one day.

DSC00640.JPG
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cb4ever104
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Re: DIY FM board

Post by cb4ever104 »

Thanks for the info Nick .
30TM060
Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.
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