I made roughly 40-50 sporadic contacts using a 1939 Meissner VFO at 5-6W and a 1934 National FB-XA, didnt even log them. Nothing spectacular since I wasnt interested in staying up past 10PM (-; Anten
Ive been using those adapters since the 80's when they first showed up and all were imports I believe. Used outdoors they dont all weather well externally but have made reliable connections even when
When using a Ameritron remote antenna switch with SO-239 fittings, does anyone know a supplier for female F fitting to PL-259 adaptor ? Thanks, 73 Bruce-K1FZ Bruce, IMO, you have the wrong switch. A
It just goes to show that what looks good on paper in theory does not mean it HAS to be the same in the real world. There is nothing to prevent 2 signals a continent away and with different antennas
I used to work EU on 6-10M crossband in those days since very few had authorization. Ireland was one that did and quite a few were on. My rig was a HB 6AG7, 6V6, 829B crystal controlled with PP 6L6 m
And one should never rely on a single source of information unless it has been well vetted. That is something that wont happen on Antennex but there are enough qualified people on Eham and here to se
Which is why military telephone wire as well as old rural Copperweld pairs are so popular;pacing is a constant and self twisting during installation is a given. Calculated self impedance agrees well
The only place Ive found tuned elevated radials being discussed so much is on ham forums. A bit over 20 years ago I installed a slanted wire 1/4 wave vertical for 160 coming off the top guy wire of a
I can think of NO earthly reason,that makes ANY electromagnetic sense to me, as antenna engineer fo placing a radial system under the end of a vertical 1/2 wave antenna - "earth-worms" not >withstand
I worked in one for several years testing my designs but this was at 2.4 and 5.6GHz. Long before that it was as a range tech for a defense contractor designing/building/installing military EME arrays
I am right now using an inverted L which is spaced about 4 feet away from my tower. The vertical leg is about 85 feet. I only have 6 radials at the present time Now here is the question The horizonta
If youre building a Beverage/BOG as the thread title indicates, resonance does not matter, it is a nonresonant slow wave antenna. For a resonant antenna up in the air and used for transmitting the in
Pine trees taller than 100 feet could be an issue, since they could be near resonance and lossy - a sad combination when within a wavelength or so of vertically polarized antennas. If your trees are
Ive personally seen the results of HF to 2M QRO (usually legal or close to it) on trees when concentrated by yagis that were barely above them. Id be there as a visitor or doing tower/antenna work an
I use an old CATV RF sniffer that was $10 at a hamfest, they got replaced whenever the systems added more bandwidth and are used by the techs to certify a new build or later to do leakage tests. Tune
Is the 4x4 pressure treated? Or from a local sawmill and uncured? Both will have an effect. Carl KM1H Hi everybody and happy new year . I have what I think is an interesting antenna riddle . I have s
Typical reactance rule of thumb is 5 to 10X the input impedance of the tube(s). In some cases it is much less and the 160M input network is modified to compensate. than 12 and require a lot less ferr
When we last left this adventure, I was shunt feeding my 110' tower on 160, which supports a multitude of yagis and wires. Unfortunately, I was coupling so much energy into the 80 meter wire array th
Im running shielded CAT 5e from the router up in the office to the basement and none of the rigs bothered it but I did have to use a single 31 core at the router outputs to eliminate its noise; the 6
Pete, I used a big 300pf breadslicer with somewhere in the 7.5 to 9KV range ( I forget the spacing, it was a vintage Johnson) and a couple of 857 size ceramic caps for my Omega at a prior QTH. Smalle