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What's wrong about using silicone caulking?

Pics of arrestor and cartridge as delivered. Also copy of the 2 page paperwork. Note the tit protrudes from cartridge and matches the indentation inside on the solder connection between the two SO-239's. The paper states it should be mounted "On a grounding bus or point where the equipment to...

Studied the TransiTrap papers a bit more. Two scenarios are identified whereby a cartridge needs replacement. A big strike and repeated smaller ones. The big strike is obvious. The second scenario is: "after a sufficient number of lightning pulses have been discharged.....there’s a gradual...

Thank you. Tube arc protection yes I've seen that application in W8JI materials but I did not recognize it.

I’ve nearing the end of my antenna make over. They are working really good and my last step is connecting an Earth Ground. I’m trying to follow modern theory of keeping the Earth Ground outside so I’m installing an Alpha Delta Surge Protector (TT3G50-HP, 1-500MHz) where the coax enters the...

Amazon link is interesting. A pre-selector of sorts?...I will investigate. I suspect my antenna upgrade has me hearing everything now. Apparently, my old EFHW really sucked. I live near Daughters of Jacob (“DOJ”) a nursing home w/ >400 beds. If the noise (teletype/fax-like) is only around...

Over the last few months I've been relying on the Radio Beacon Network to tune my antennas. It's a resource I overlooked far too long. Today and for the first time, I could not hear the 14.100 NYC beacon due to interference and I’m only a mile or 2 ‘as the bird-flies’ from the UN. After...

England to G5MCL this morning 80w (28.395), this OCF antenna is working fine. All the work on Rec pre-amp was not really needed. It seems that my old antenna simply sucked. Sometimes lessons learned the hard way are best.

Closing this thread out. Today I was able to try the new 10-40m OCF antenna, barefoot 65-80w max. Several contacts with POTA stations everywhere from Nova Scotia (20m) to Corpus Crispi coast (10m). I can hear everything! Dentron ATU and OCF go together well. I can tune 10-40 (avoiding...

The 50' length of BR-400 (Browning name) had an intermittent short on one connector, so the excess length problem was addressed fixed with a new clamp-on connector. Presently rebuilding the mast-mount coax Switch with Rec. Pre-amp and Balun. Pre-amp board worked very good so I ordered the...

The comcast address is the one I used to make contact and the gentleman replied within a few days. That was in June 2023.

Thanks for the explanation on that. I did not understand why there were so many auto tuner sections listed for sale. I only recently got an auto ATU to play with and it gave me a new appreciation for my old and heavy, T-Match.

I only recently got an auto-ATU to learn about. Not the miracle I hoped for it has it's uses. I see auto ATU sections removed from HF Base Stations being sold on eBay. They typically have motorized variable air caps coupled with toroids larger than I would associate with a 200w max limit on...

So what to do with an extra 8' of stiff-ish 400? I'm almost finished with a rig to radial antenna rebuild. I read the EXCESSIVE COAX thread above to conclude it depends on the antenna design and/or feed-point with regard to common mode current from not having an adequate ground system. That’s...

Big Brother prefers us to communicate in a manner that leaves a trace

Trying to place preamp board in mast-mounted relay box holding a DPDT latching relay to select 10-40 OCF or aluminum 20m dipole. Also in box is newly built 2 core 4:1 Balun (w/ 1:1 series connected) as per the design suggested by TRX Labs (a prolific YT site by European gentleman with many Radio...

Thirsty wick, that’s what I need thanks. I’ve used coax too on occasion but labor intensive. Seems a solder vacuum is on my shopping list. Thank you

I’ve never used one, but saw on YouTube they seem to work well.

I need to order a new roll of braid and I'm not familiar with the different products. I've only made 2 past purchases of Braid in my lifetime: 1 roll worked very good while the other, not (I wanted to type "sucked" but it plainly did not). For me, a small roll Braid lasts years so I want an...

Amp working good on bench without an ATU. Been rewinding inductors like an Elf. New band switch, 6 inductor settings. Need antenna work before qro. Preparing to revise the EFHW. Currently, it's a 2 core (240 size) 49:1 unun feeding approx 27' counterpoise horizontal in-line with 70' main...