[MRCA] Chicom Type 883 VHF radio-CORRECTION

[Ray Fantini]

If you can publish a pdf or jpeg of the schematic I can put together a couple points you can check and maybe get the thing operating again. Worked on several late fifties and early sixties designs and have a fair idea what people were doing back then and would speculate that the radio has a signal HFO for receive and transmit and maybe  its double conversion. The biggest issue I have with a lot of that stuff is it won't make it to 51.0 so it's almost impossible to do anything with.

Ray F

-----Original Message-----
From: MRCA [mailto:mrca-bounces at mailman.qth.net] On Behalf Of Ken Downs
Sent: Wednesday, July 29, 2015 1:46 PM
To: MRCA at mailman.qth.net; Ken Downs
Subject: Re: [MRCA] Chicom Type 883 VHF radio-CORRECTION

Tom, Jeep, and anyone else reading this,

Duh. Brain fart time on my part. My radio is a type 884, not an 883 as I stated earlier. Guess I took stupid pills this morning instead of my usual meds... 

I had done some research, and yes, the 884 is the all solid state replacement for the tubed 883 of maybe ten years earlier. I do have the manual, but, as one would expect, it is in Chinese. My 47-week Basic Mandarin course at the Defense Language Institute concluded in December, 1972, and I was not very good with written Chinese even back then. Now ? Forget it! The good news is that the manual includes a complete schematic. 

If no one on the list is interested, I will probably take it to Nearfest in October and try to get some of my investment back. Someone may be interested in it as a non-working example of military radio, or perhaps a man-pack for a child who likes to play army. Whatever.The case could be used for a better radio (or doorstop ?). When I saw it for sale at the military vehicle rally in Weare, NH Saturday, the push-button cw "key" and Vietnam memotries of the Chinese K63 with which I am familiar made me think it might be an hf radio, so I jumped at it without much thought. Ah, impulse buying. 

Win some, lose some. 

Ken, W1KRT

On Wed, 29 Jul 2015 08:10:41 -0400, Ken Downs <krtdowns at myfairpoint.net> wrote:
This past weekend I picked up a Chinese army backpack radio. It looked interesting, came with a bunch of accessories, and was priced right, so I took a chance inspite of not knowing anything about it. It turned out to be a type 883 VHF (45-50 MHz) FM/CW rig made in 1974. The model was used 1972-1980's and is all transistorized - no tubes or ICs. 
> Anyone have any experience with these radios? The receiver on this one 
> sounds live, but does not receive anything. The TX also has no output. 
> I replaced the T/R relay (it came with spares) but still no joy. At 
> this point I suspect the LO or something in the multiplier chain. Any 
> suggestions?
> Worse come to worst, the great little case could be used for an HF QRP 
> radio. Thanks and 73,
>
> Ken, W1KRT
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