[SBE] RCA Dummy Load

[jack.davis]

Darn spell check PCB 


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-------- Original message --------From: "jack.davis" <jack.davis at engineer.com> Date: 4/5/18  7:19 PM  (GMT-08:00) To: sbe member discussion mail list <sbe at sbe.org> Subject: Re: [SBE] RCA Dummy Load 
It will be either 50 or 51.5 ohms and should be good to at least channel 13.  The plug should be a normally closed thermal switch that opens on high temperature. 
The oil could be something that smells like fly spray. Very obnoxious stuff!  Will dissolve vinyl floor tile (don't ask).  Could be COB.
JackK6YC 


Sent from my Verizon, Samsung Galaxy smartphone by smoke signals 
-------- Original message --------From: DanRapak at verizon.net Date: 4/5/18  6:02 PM  (GMT-08:00) To: SBE Broadcast Group <sbe at sbe.org> Subject: [SBE] RCA Dummy Load 

    All:

      

      I'm looking for information on an old dummy load. I have an old
      RCA liquid cooled dummy load that's been collecting dust for
      several years. It
        is an RCA  P/N 216251. It's a nice unit with substantial
      heat fins. It's rated at 1 KW continuous and 1.5 KW for 30
      minutes. I'm about to put it in service in the ham shack. However,
      I have no manual for it.

      

      My first question is, does anyone know what the frequency range of
      this unit is?

      

      Second, there is a two-pin, military style Amphenol connector on
      the the dummy load. What is the purpose of this connection?

      

      Finally, what is the recommended transformer oil / coolant for
      this thing?

      

      Any help would be appreciated.

      

      Thanks in advance,

      Dan Rapak

      

      

    
  
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