[Premium-Rx] TMC 32 output rack mount multicoupler available

[James C. Garland]

I had one of these for about seven years and, frankly, didn't much 
care for it. It runs very hot and I lost transistors on a regular 
basis. Also, I think it's not as quiet as some other 
multicouplers.  The big plus, of course, is that it has 32 
outputs.  I disaabled one bank of 16 to cut down on the heat, and 
also ran mine on a variaac at reduced line voltage.

Jim  W8ZR

At 09:22 PM 4/15/2007, you wrote:
>Don wrote:
>>Rack mount, 32 output.  Builit by Technical Materials Corporation.
>>
>>This is one of the highly desired multicouplers (you can read about them in
>>premium receiver archives.
>I agree completely with Don's opinion and don't want this question 
>to in any way disparage the unit he has available, but I seem to 
>have trouble with the one I have been using for a number of 
>years.  It was made for TMC by RCA Ltd. of Montreal, and is badged 
>as CU-5069/FRD-10A(V), but the manual supplied was for the TMC 
>AMC-32 which seems to be identical.
>
>For no apparent reason, an output will go dead, even though I 
>haven't done anything to cause it.  Once or twice I will admit I've 
>keyed a transmitter into an output, which of course destroys the 
>transistor, but even after eliminating any and all connections to a 
>transceiver, I've still got several dead outputs again, after going 
>through the unit a couple of years ago and replacing dead 
>transistors (with new heat sink grease).
>
>If anyone has experienced this and can offer any suggestions I'd 
>welcome them.  The only thing I've found is the addition of cooling 
>fans per this article: http://www.skirrow.org/Boatanchors/TechTalk6.pdf
>Also looking for a source of reasonably priced 2N3866s.
>
>The multicoupler is the perfect way to have multiple receivers 
>available and really a nice piece of equipment.
>
>Thanks and 73,
>Bob W9RAN
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James C. Garland
102 Spur Ranch Road
Santa Fe, NM 87540
www.w8zr.net
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