[SBE] RCA Dummy Load

[DanRapak at verizon.net]

On 4/5/2018 11:35 PM, K7CR wrote:
>
> Dan – Kinda concerned that it’s bone dry. Perhaps someone dumped the 
> contents in the fear it contained PCB’s?
>
Dunno. It was dry when I got it.
>
> Have you put an ohmmeter on the input to make sure that all is well 
> inside?
>
Yep. Reads good.
>
> Regarding the Cannon Connector on the end of it – That was usually 
> connected to an internal temperature switch that was part of an 
> interlock-string.
>
> If you want to use that…I might have a connector, let me know
>
There is a connector on it. (The wires were diked off.) But thanks for 
the offer. Much appreciated.
>
> I do know you can put 500 watts into it for some period of time and it 
> only gets slightly warm
>
The tag says it's good for 1 KW continuous, 1.5 KW for 30 minutes. That 
oughtta do.
>
> Clay/K7CR
>
> *From:*SBE [mailto:sbe-bounces at sbe.org] *On Behalf Of 
> *DanRapak at verizon.net
> *Sent:* Thursday, April 05, 2018 7:46 PM
> *To:* sbe at sbe.org
> *Subject:* Re: [SBE] RCA Dummy Load
>
> Thanks Jack. Much appreciated!
>
> On 4/5/2018 10:26 PM, jack.davis wrote:
>
>     Darn spell check PCB
>
>     Sent from my Verizon, Samsung Galaxy smartphone by smoke signals
>
>     -------- Original message --------
>
>     From: "jack.davis" <jack.davis at engineer.com>
>     <mailto: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>
>     <mailto: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.
>
>     Jack
>
>     K6YC
>
>     Sent from my Verizon, Samsung Galaxy smartphone by smoke signals
>
>     -------- Original message --------
>
>     From: DanRapak at verizon.net <mailto:DanRapak at verizon.net>
>
>     Date: 4/5/18 6:02 PM (GMT-08:00)
>
>     To: SBE Broadcast Group <sbe at sbe.org> <mailto: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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>
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