[Test-Equipment] dummy load

[Rasputin Novgorod]

Hi guys:

At a Hamfest fleamarket today, I bought ($50) a 500 watt, 50 ohm
RF dummyload (100 - 500 Mhz) with builtin 25/100/500 watt meter.
Bayley Engineering, Ajax, Ontario; it has an "N" connector.
The internal heater to dump the RF is in an oil bath, which 
carries the heat to radiator fins. Most of the oil is gone,
leaked out? 

Anyone know what kind of oil I should use to refill?

Sincerely
/b


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