Stop messing around with these lash-ups. You can buy a real Dummy Load,
aka Bird, for short money. I got a 2500 Watt Bird for $200 over on the "evil
empire" last year. With one like I got, you can really fry your Amp !! and the
D/L will not even break a sweat.
73, Dick, W1KSZ
On Thu, Jun 14, 2012 at 4:45 PM, Rob Atkinson <ranchorobbo@gmail.com> wrote:
> Those are very expensive.
>
> Go look around on-line or at hamfests for carborundum resistors. Try
> to find four around 200 ohms each. If they are around 18 inches long
> or so and 1 inch diameter each will dissipate 200 watts, perhaps more
> in air. parallel them with some hardware; mount them in a container
> or in a metal frame with a UHF jack wired across them and with a fan
> on them you have a pretty good ham DL for most ham amps. in a tub of
> oil they'll probably handle quite a bit more power. There are other
> methods: get some of the old light bulb socket ceramic cone heaters,
> the ones with resistance wire wound on them and mount them in
> porcelain sockets on a board and wire them up -- I'd try them
> paralleled first; you can experiment with clip leads -- and use a
> tuner to match them to 50 ohms.
>
> 73
>
> Rob
> K5UJ
>
> On Thu, Jun 14, 2012 at 6:18 PM, Jim Barber <audioguy@q.com> wrote:
>> These make it easy:
>>
>> http://www.ebay.com/itm/4-ea-800-Watt-Hybrid-200-ohm-Load-Resistor-500-mHz-/370454666736?pt=LH_DefaultDomain_0&hash=item5640d19df0#ht_734wt_1396
>> <http://www.ebay.com/itm/4-ea-800-Watt-Hybrid-200-ohm-Load-Resistor-500-mHz-/370454666736?pt=LH_DefaultDomain_0&hash=item5640d19df0#ht_734wt_1396>
>>
>> And no, I'm not shilling for Henry Radio. I just buy RF parts from them
>> here and there. :-)
>>
>> 73,
>> Jim N7CXI
>>
>>
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