Good stuff Rick. I bought and built the OHR-100RFL because it was
priced reasonable, it was 100W rated, and I figured with all my QRP rigs
it would last my ancestors a couple dozen lifetimes. I have a couple
other 20W homebrew loads around here too...can never find one when I
need it though...the 100RFL sits in a handsome cabinet on my bench where
is it handy and usable all the time.
No sir...can't beat a good dummy load.
On 3/30/2015 7:17 PM, Rick Dettinger wrote:
Yes, you are.
Dummy loads are not fun, like nice radios.
When I built a Heathkit HW100, 45 years ago, I needed a dummy load to align the
transmitter section.
Not having one, and having just spent all my discretionary funds on the radio,
I used a pencil lead to make a resistor element.
I had to experiment with different drafting pencils to find the correct
resistance. I carefully removed the wood with a razor blade, and attached clip
leads at the points that gave me 50 ohms. I dunked the result in a container
of motor oil (probably not the best choice), and finished the alignment. It
worked well and was a one shot deal.
Later, following instructions in a ham radio magazine, I built a dummy load
using two copper disks and 10 resistors. This was also installed in a quart
can filled with oil of some kind. I put the dummy load under my shack and ran
coax up to my rigs. Also worked well.
Now, I use an Elecraft 20 watt load, and have used it for short periods of time
at higher power to make quick measurements. This included the alignment work
on my K3/100.
73,
Rick Dettinger K7MW
On Mar 30, 2015, at 2:43 PM, Dave Baxter wrote:
I often wonder about people who will buy expensive (but excellent) radio's,
then baulk at spending a few bucks, quid's or ?, on basic test kit like a
half decent dummy load!
Am I missing something?
Dave G0WBX.
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