Search found 5 matches

by texan
Saturday 21st Mar 2009, 7:49
Forum: CB Radio Modifications
Topic: 2sc2999 upgrade
Replies: 4
Views: 4832

Re: 2sc2999 upgrade

:doh: My schematic came in today. The first IF Amp is TR6. I Want to thank everyone for all the help I got on this question. After all thats what forums are for Getting answers when you need a little help.
by texan
Friday 20th Mar 2009, 5:08
Forum: CB Radio Modifications
Topic: 2sc2999 upgrade
Replies: 4
Views: 4832

Re: 2sc2999 upgrade

Here is the info I could find on my transistors can someone point out the right transitor for the upgrade. TRANSISTOR USES: TR1= NB AMP TR2= NB AMP TR3= NB AMP TR4= RF ATT TR5= RF AMP TR6= AMP TR7= AM TX AMP TR8= RX AMP TR9= RX AMP TR10= RX AMP TR11= AGC AMP TR12-14 = SQUELCH AMPS TR15= SSB DETECTOR...
by texan
Friday 20th Mar 2009, 1:18
Forum: CB Radio Modifications
Topic: EURO 3900 IRF520 conversion
Replies: 10
Views: 5651

Re: EURO 3900 IRF520 conversion

Everybody keeps saying the 2sc1969 is hard to find and expensive. buy them here.http://www.rfparts.com/transistors_2SC. ... 9115918011

If they are out of stock I have some I will sell for 10 bucks.
by texan
Wednesday 18th Mar 2009, 4:01
Forum: CB Radio Modifications
Topic: 2sc2999 and Schottky diode swap
Replies: 22
Views: 43200

Re:

I have the trc 457. It has the upd 858 like the 139xlr {same board number to I think} I changed the diodes in am detector and have the 2sc2999 transistor. I need to know which transistors to change. [quote ] I have done this mod in The Uniden Washington with the MB8719 PLL,the Cobra 148GTL,the Cobra...
by texan
Wednesday 18th Mar 2009, 0:25
Forum: CB Radio Modifications
Topic: 2sc2999 upgrade
Replies: 4
Views: 4832

2sc2999 upgrade

I put the diodes in my trc 457 but now I need the transister upgrade. It was not to hard to relize the diodes was the am detector diodes but what transistor do I replace. Does anyone know where I put this transistor to finnish this upgrade.

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