Lots of questions, maybe a little bit of useful answers from me. First, I doubt there is any BOG that will cover 8 octaves with a useful pattern. Unobtanium, IMO. Second, your question did cause me t
ZL3IX I think by accident had a fence with a break in it. My not working Beverage was 4'up over a continuous welded wire fence. Then some NEC2 modeling of a 600' Beverage 6' above a continuous 3 wire
I stick to max 80psi which has a good safety factor vs the pipe rating (4" @220psi in my launcher). Very cold weather and knocking it around when brittle or anytime is certainly to be avoided. An alt
The specs are for a maximum pressure at a specified temperature, usually 72 degrees F. PVC softens with temperature so the ratings degrade with temperature. It is usually not used for hot water servi
Curious as why non resistor spark plugs aren't on the list of choices. Easy to gap. Pt-Pt electrodes last forever (100k miles). There was a ham mounting two on a Cu plate for ladder line, but that wa
A DHDL is somewhat ground independent so might be a choice. Raising the base of one end with 66' separation isn't too tough on the slope. It is possible to phase a couple of them. Then add some relay
The goal is admirable. I did some modeling of inductor shortened BOGS with EZNEC Pro4 and found it is extremely sensitive to height above ground. A half an inch change in height can reverse the patte
Check antennasbyn6lf.com. Rudy did a number of measurements of ground properties. Grant KZ1W On 12/7/2019 17:13, Mikek wrote: I once saw a print up of laying out a Dipole on Ground and doing measurem
For my relay reversible DHDL's used on 160 & 80m, I'm using 0.1uf 500v DC blocking capacitors, particularly the Kemet X7R MLCC SMD ones. digikey 399-6747-1-nd There are enough parts for reversibility
Mike, I think the problem with elevated radials in 4 squares is the mutual coupling and the necessity that the radial current and impedance be equal. Otherwise the pattern is distorted. Having measur
Likely >$3000 for a real "enclosure" that size, probably custom, painted and 2x for stainless. Plus how to move and ship about >700#. Grainger has big enclosures, but nothing your size. You might fin
Important facts about salt water are the attenuation of a wire submerged 10" at 1MHz is -87db and at 4S/m the conductivity is 10,000,000 times less than copper wire. Putting a single radial in a loss
Rob, I considered this for my MM SSB. It doesn't work. Several published tests prove that. Ok as an AC/DC ground. Grant Herb, KV4FZ Am looking to activate a location with very limited space surrounde
Charge it to 5Kv and apply to appropriate body part. Grant KZ1W Roy Morgan K1LKY Western Mass FWIW -- I was looking at All Electronics website last night Reduced Price 0.0004 UF, 5000 VOLTS MICA CAPA
aircraftspruce.com (but airplane stuff is $$$$$) If it is really dacron then http://synthetictextilesinc.com/supportham.html And available at several ham radio suppliers. Maybe you want nylon based,
I agree there is much F connector junk out there. However Amphenol does make a "4 hole" female F chassis jack, an excellent product. digikey usually has stock https://www.digikey.com/product-detail/e
comments in line As noted by others, N6LF has a wealth of modeled and measured data on elevated radials. antennasbyn6lf.com The antenna would be supported by a 16 m (52.5 ft) high fiberglass pole pla
More power to make up for my 10db excess noise = xxx Kw - whoopee! Need to get some 3 phase. Remote Rx, eg 100km makes a lot more sense. Clubs could put up shared facilities. With direct sampling syn
FYI some data which I found interesting My dry earth at end of summer to very wet winter (WWA) causes my lightning ground system DC (actually about 300Hz AC) resistance to vary about 40% lower, ie 7+
"If NEC2 is wrong, so is NEC4." - I don't think so since a different ground modeling approach is available in NEC4.2. Running EZNEC Pro4 antennas both in 2 and 4.2 sometimes shows significant differe