That's the info I was looking for....I shoulda been more specific RE "type" in my original post. Thanks! 73, Charlie, N0TT _______________________________________________ Topband mailing list Topband
Edwin Armstrong, who long ago invented the Armstrong oscillator and other things, used a scheme to "eliminate" static. He used one antenna, two identical radios (regens!) connected to that antenna,
Bill, I can't answer your second question, but I'll say this from my experience with a hard-sided plastic golf case weighing in at the maximum allowed weight of 70 lbs. "Sporting" equipment can norm
Thomas, I got into the thread a little late....It's been awhile since I've looked at the circuit I've used which operates a 24-v relay from 12v, but as I remember it and FWIW, I use a DPDT switch an
I've checked for breaks in underground wires by using a portable AM radio placed close to the ground and above where the buried conductor should be. In your case just listen for a sudden change in le
Hi Gents, I have some RG-6 with a double AL foil shield with a braid in between. It's a "stiff" cable with a heavy plastic outer covering. I pealed back the layers and I feel a somewhat sticky stuff
Hi Gents, I'm planning a 160m RX array using W8JI's 20-ft vertical design. What's would be considered the minimum distance between one element in the array and a barbed-wire fence (that is about 1 me
Twisting helps prevent the twin lead from whipping in the wind. It's a old "truckers trick". To twist, use an odd number of supports, including the ends. Install the line without twisting and tension
I've used 2-inch pieces of PVC pipe. I drill one "small" though hole in the middle. Then make one of those holes large enough to allow a phillips-head screwdriver to pass thru. To secure the insulat
Hi Gents, Jumping in with both feet on the thread.... In my humble experience, common-mode chokes aren't really needed at all IF the antenna is disconnected from it's matching transformer and no Topb
Jim, OK, different circuit....interesting. I might try some A/B tests, such as remotely switching (battery, wirelessly controlled) in/out a common mode choke while listening to the receiver. Other t
Good idea on using posts...readily available. On the concrete mix, I've had good luck using just FINE sand, washed in with water. Using fine sand with water will fill every void and tightly lock the
Group... Heh..heh...Oh yes we DID have an amplifier on 80 & 160m!! :O) We Low Band operators insisted on it!! We also had an efficient antenna at the edge of a saltwater bay and did our best to work
Pete, Yes, they DO work. How well they work compared to other RX antennas is another story. In my experience, a 5ft loop is adequate. Your transmit antenna might be coupling noise into the loop. Plac
Yes. "Slack" lines. Lines, mostly customer taps, that become even more slack in warmer temps. Also...I troubleshot a case where a "new type" of lightning arrestor started making rather robust noise w
Jim, It won't make any measurable difference if you use bare or insulated wire for radials above or below ground. The #18 wire will work well for buried radials, but at the base of the antenna be sur
Ed, I once used a "Mantis" with the edger attachment...it works but what a pain to use for radial placement that turned out to be because it didn't leave a clean "trench". That "Earthquake" machine m
Hi Gents, For an excellent device that puts YOU in control of keying weights and timing, check out QST, April 1987, Page 51, "A CW Keying Interface" authored by W6OWP. I still have mine in operation
Hi Pete, "Regular" RG6 will wick water into the shield and eventually ruin the coax. Use only the "flooded" type outdoors. Read more below. In my experience, the brand of RG6 doesn't particularly mat