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Radio Make and Model: TRC449 PCB Number: PLL Number: Test gear available: Symptoms: Recieve Fades Out What is working: TX, Powers Up What has been tried: NIL Did it suddenly happen ?: Just Purchsed Anything else that may be of help?: I just purchased a pristine TRC449 mobile radio. It TX great but w...

Rick,

I thought what I had sent was what you asked for.
Sorry.
Thanks for all your help.

Jim

Rick,

TR24 shows when TX:

Base 9.15V
Collector 12.4V
Emmitter 8.45V

Pin 11 on the PLL shows 2V
Pin 12 on the PLL shows 4.77V

I have sent you a pic for reference.

Thanks

Jim

Rick,

The voltage on pin11 of the PLL on

Channel 1 is .048V
2 is 4.77V
3 is 4.77V
4 is .051V
5 is 4.77V
40 is .053V

Also the Voltages on T24 are as follows:

Base .052V
Collector .052V
Emitter .084V


Jim

Rick, I tried an external power supply with no difference. I will check the pin voltages when I get home. The gray wire is soldered down through to the top (NOT FOIL SIDE) of the PC board Right next to R29. It then feeds through the bundled harness and comes out near the front right part of the boar...

Rick,

TR24 and TR36 (regulators?) check out fine.

TR43 (Driver) and TR44 (Final) Check out fine.

TR25 also checks out fine.

When you speak of the dimmer are you refering to VR17?

All the LED's are working and the channel selector changes the channel numbers but no RX and no TX.

Jim

Also, I forgot to mention, there is a grey wire connected to the PC board next to R29 The other end of this wire has become disconnected and I can't tell where it goes. Anyone have a 457 that they could look at and tell me where this wire connects to? A pic would be perfect.

Thanks

Jim

Hi Rick,

I am currently at work. I will have a look when I get off this evening.
Thanks a bunch.

Jim

Hi Folks, I recently aquired a TRC457 in great condition but not in working order. The old man I got it from bought it new in 1978 and used it up to 8 years ago when it just would not come on one day and he stored it under his bed. The radio had never had the back off it so I know where I am startin...

Anyone tell me whats involved to convert this radio to work on 11 meters??
Thanks

Bob,

I need to know where the three wires from the relay/electronic switch connect.

Thanks

Hi People, I am looking for a schmatic diagram (not a block diagram) or a couple of high resolution pictures of the inards of the Turner +3 desk mic. I need to see what wires go where from the amp board to the switches and gain control. Any help would be greatly appreciated. Jim jamesm@nl.rogers.com

thanks a bunch

Jim

Anyone know what the rated impedience of the trimmer pot for AM power is?
Thanks

Hi Folks, I am looking for a copy of CBCintl's. THE "SCREWDRIVER EXPERT?S" GUIDE to CB repair. Anyone have a copy they want to sell?
Thanks

Jim

As the subject line states, I am looking for a Vintage TRC48. Any left out there in working condition?
Thanks

Thanks for the help guys. It was a allignment issue. I tweeked a couple of coils and behold, the power is dead on. Thanks again.

Jim

Hi Folks, My Washington isn't putting out the power it should. On AM it is relitively fine at 4 watts with very little forward swing. On SSB I can not seem to drive it past 5 watts or so. Anyone have any ideas as to what could be the problem? I am using a Astatic D104 Mic to modulate it but there se...

Good day people. I recently purchased a RM200P amp. When connected to my Washington I get a DK of about 50 watts. When I start talking the watt meter swings backward peaking at 25 watts. Anyone have an idea as to what causes this to happen? The SWR on the system is exceptionally low with the amp off...

zodiac wrote:You have a PM.

I'd like this also if ppossible.

Thanks

Does this control TX audio?

Thanks