I believe that MFJ uses or used to have non inductive Globar style resistors
in their loads. These were imports of course. They may be available from
them at a reasonable cost.
Carl
KM1H
----- Original Message -----
From: "Per Molund" <pmolund@online.no>
To: <amps@contesting.com>
Cc: "Keith Schreiber" <schreiber@alltel.net>
Sent: Saturday, November 17, 2007 9:59 AM
Subject: Re: [Amps] Bird 1KW+ Load Resistor
>
> I have found only one manufacturer of non-inductive tubular
> resistors today; Kanthal Globar. Check out
> http://www.globar.com/ec/tubular.php.html , however these are expensive
> items.
>
> You could also check Surplus Sales of Nebraska at
> http://www.surplussales.com/Resistors/NonInductive/Res-NonInd_list.htm
> and look for Type C Non-Inductive Resistors. You could be lucky and
> find a way to use any of these resistors.
>
> I have a few Bird 8329 (30 dB - 2 kW attenuators) with broken main
> resistor sitting on the shelf awaiting repair. The sub resistors in
> the items are labeled by Welwyn, however the main resistors are not
> marked (or the markings are burned off). I do not think Welwyn make
> tubular non-inductive resistors any more. Support staff at Bird does
> not want to give away any information about or supply these
> resistors, they only tell us to return the RF Section Assebly for
> service so I don't expect You getting any information from Bird.
>
> regards,
>
> Per
> LA9XKA
>
>
> At 12:28 11.11.2007, Keith Schreiber wrote:
>>I'm looking for info and leads on purchasing a replacement resistor,
>>for a Bird oil-filled load. Bird tells me they no longer have parts
>>for, nor support "this obsolete load" which I believe is from the
>>1960s. The model number on mine is 888 and is similar to models
>>6835, 8813, 8832. The sticker on the front says 1200W continuous -
>>1500W for 1/2 hour.
>>
>>A possible resistor part number is 3510-026-2 (this info from
>>another ham.) The resistor is exactly 12 inches long X 7/8ths
>>OD. It is hollow. The ID is 5/8ths inch, making the walls 1/8th
>>inch thick. It has a 5/8th inch copper band at each end for
>>connection. It's white ceramic, with a black film element. (If you
>>think you have one for sale, I can e-mail you a picture of what's
>>left of mine.)
>>
>>Do you have one of these lying in a drawer somewhere, or know where
>>I might find one? Or perhaps a resistor from some other vendor that
>>might work? One more question: Does anybody know what that
>>incredibly foul-smelling, dark colored coolant in these loads
>>is? Strange properties - thin like water but freezes above 32 F ????
>>
>>Thanks for any leads or info & 73
>>Keith W8KTH
>>_______________________________________________
>>Amps mailing list
>>Amps@contesting.com
>>http://lists.contesting.com/mailman/listinfo/amps
>
>
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