[Elecraft] Dummy loads for dummies

[Mark Goldberg]

I also found one of the big oil filled dummy loads at a Hamfest. It handles
500W easily. I bring a phone powered USB powered VNA with me to Hamfests to
check things out. You never know what you will find!

73,
Mark
W7MLG

On Dec 28, 2016 8:25 AM, "David Olean" <K1WHS at metrocast.net> wrote:

> It always pays to keep your eyes open.  The local (and only ) surplus
> store here has a pile of heat sinks that look just great for a 250 watt
> solid state PA. The good part is that they also have a pair of SMA
> connectors, PC boards, and associated flanged 50 ohm resistor good for
> several hundred watts. I think I paid $15 for one, so I got two DC to 2.4
> GHz dummy loads for $7.50 each. It is easy to modify them for what ever
> connector you want. Jim is right, but always bring a pocket ohm meter! heh
> heh.
>
>
> Dave K1WHS
>
>
> On 12/28/2016 8:52 AM, Jim Brown wrote:
>
>> On Wed,12/28/2016 12:26 AM, Edward R Cole wrote:
>>
>>> I have a big old Sierra Electronic 500w coaxial load with heat sink and
>>> built in power meter; weighs about 40-50 lbs; makes a dandy door stop,
>>> too!  It is rated to 1000-MHz.
>>>
>>
>> I found a nice oil-cooled dummy load with a big heat sink integral to it
>> at a hamfest many years ago. It's rated 500W continuous. That was a good
>> day. Doorstop -- you betcha! :) Measured it with my VNWA and found that
>> it's good well into UHF. No attached power meter though, but found a nice
>> Bird with some slugs on another day.
>>
>> I've also found industrial quality 10W and 100W dummy loads at hamfests
>> that were salvaged from cell sites. One purchase yielded nearly ten of them.
>>
>> This is the sort of stuff I look for at hamfests (some call them flea
>> markets or swap meets). Also high quality connectors and adapters.
>>
>> 73, Jim K9YC
>>
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