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also came out as a Universe 5500 for southpacific..with the upd 858 same one as the Palomar.. those light brown with white upper silkscreens are typical from Malaysian fabs, where usually components were installed by hand..around the 80's..it might be that Korea commisioned those boards at...

when will a cb get a proper IF filter control?

Korea (Designed by Dynamation Int'l, Baton Rouge, USA

Good afternoon..Ive been using a chinese sdr radio with a short AV line and a 101k cap..it this safe or what would you recommend me? its sniffs TX signals ok but doesnt pickup IF like a 17mhz RX crystal signal at test points..I also have a TinySa but I only use it as a signal generator, becuase...

please see here so you can see what I mean..at this point where the cap is, normally a good cb radio will output a very weak but very stable signal..this one is not stable at all

Im currently testing a 5010..it doesnt barely TX so I removed final and driver..I measured voltage at the driver base and its not stable, jumps around from 0 to 8v..traced backed to the predriver, removed it and same thing at the base pad..I furthered down to the 2 transistors right before the 3...

replaced the TDA7502P and related caps, no change .what really worries me is the squelch problem..if I turn CW to around 1/4, a huge feedback squeal..if I continue, the squeal goes down, but still there and doesnt squelch RX noise..I removed a 373 transistor and that disabled squelch control, no...

Hi all.. Due to the lack of MRF477, Im reading that the 1945 is a drop in substitute.. Is there anything to adjust on a hr2600? thks!

Hello.. I recently got a Teaberry Ranger T..this radio had its final and driver missing and I installed the pair from a TRC451.. This radio is a charm receiving..it pickups signals where my SDR928 doesnt! My problem is theres a low crackle and pop sound on CB and PA mode..I replaced several caps...

got it..thnks! this is my love project!

Austin Library is not loaning outside Texas...so maybe you could help me?

Thnks RWB..

Looking if anybody can share a copy..Sams credit card system doesnt recognize my bank card..Sear Roadtalker 40 SSB , the old one , which has a 40 marked center knob no LED display..