Had fun working KL7/VE7ACN before heading out to work this morning at 0845Z.
He was very strong here in MD. I was surprised. Very easy to work. This
completes my 160 meter WAS ! Finally :) Joe - N3HEE
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The problem with doorknobs capacitor is the dielectric. Class one or NPO
does not change capacitance with temperature and has low loss on 1.8 MHz,
however the max capacitance you can find is 170pF. Most 500pf doorknobs are
N750 and can be used up to 3 amp on 80m, but only 1.5 amp on 160m, with
Greetings. I am looking for a 12 volt dc coil, solenoid with an arm travel
of anywhere between one half to one inch or so, either push or pull. It
doesn’t have to be very big or strong, nor pretty. The one in your junque box
would likely be just fine. Any help? Info on QRZ is good.
Hi all,
There are some good, fixed EU caps that were used in coast to ship radio
transmitters.
One of the outstanding onses were manufactured by "Rosenthal", also famous
for the production of extremely high Q porcelain used in dishes.
Otherwise I would follow the advice from Guy.
73
Len
SM7BIC
For a while I was cooking vacuum variables in my 160 meter Omega match
network as well as SO-239's es "N" female connectors...
I couldn't figure out what the problem was?.
So I checked the line from the shack to the network... It was a 1/4
quarter wavelength
Once you know the problem is the cap, then you need to get really serious
about the cap. Caps in RF tuning networks are stressed applications.
Decide if you ever want to use it for anything except short and separated
cycles, like calling DX. If you get into contests, or ragchew for hours
with
Dear YLs and OMs,
9N2EI will be on TB tonight. The frequency is not yet known but if
received it will be passed on. If the activity is good enough they may be
on more nights.
73 Doug EI2CN
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