Aren't they in the MF/HF range? Isn't LF below 500kHz? Yes, ends at 300 kHz. A chart: https://www.tti.com/content/dam/MarketEYE/assets/Passives/me-zogbi-20151214/table-1.jpg Kurt ____________________
I have some small antennas on gimbal mounts, something like this: https://www.westmarine.com/dw/image/v2/BGFG_PRD/on/demandware.static/-/Sites-wm-master-catalog/default/dwae6ecc81/images/orig/1982463
Thanks to all for their responses, and suggestions for a rotator control, lot's of ideas, and I've figured out what I need for my application. Kurt _______________________________________________ ___
Ultimately, it comes down to "trust your retailer" One can ask for traceability to the mfr One can ask for a certificate of conformance ~20 years ago, in the electronics industry, that was a
On 11/16/2022 15:12, Ken WA8JXM wrote: John is correct that "pipe" is poor for structural use. The proper term for what you need is "tube" which is structural and available in a wide range of diamete
"No one has mentioned something else that would work. Get your wall strength/rigidity, then, fill it with concrete. Something to consider." The utility pole anchors I used, the same the power and tel
On 11/17/2022 18:33, Hans Hammarquist via TowerTalk wrote: I used the same type as the utility companies. They are a lot cheaper if you buy them from a utility supply house. Anyhow I put them in with
All the screw in anchors I've seen (several dozen, 30 years ago) had a continuous weld for the entire helix. I would say that a "tack weld + short weld" is a unit that was mis-manufactured (i.e. ship
I have never seen one however a bust open type anchor is mentioned on W8JI's site: https://www.w8ji.com/screw_in_guy_anchors.htm I've seen them, played with one. The power companies here use their hy
NY state and possibly the whole US. A local building inspector is telling me that just like with towers, NY requires any antenna mounted on a tower to be able to withstand a 3-second wind gust at 115
I also found they will vary in SWR indication from zero to infinity depending on the antenna relative to it's surroundings, even when theoretically perfect, AND, the two oddest, static on the meter f
I needed to spread some rails in a project, was hoping to find wedges with a threaded bolt, figured they couldn't be too pricey, boy was I wrong. They start in hundreds, and go to tens of thousands.
There's conductive, and inductive. JB Weld contains iron, and is magnetic. It's comparable to the ferrite materials used in RF. A good dollop of that inside each connector will accomplish something.
Florida ( Wasps and spiders ) clogging up the tubes which later becomes water dams. People have been known to cause the same problem themselves on new Rohn 25 because they didn't know the bolts were
I am hoping for some home "remedy" or simple mixture that does not involve some complex chemicals or procedures that can be applied on, brushed then rinsed off. TU 73 I use a clean small stainless st
"I'm having my electric service panel in our home replaced and wanted to ask if any of you have had experience, either good or bad, with code-required arc-fault circuit interrupters and related RFI?"
It is also true that a lot of panel manufacturers say "only use our breakers" - and if that's what it says, then that's what the NEC requires. Basic marketing. They don't say, "Use our panels, and AN
"There was no RF - I wasn't on the air then - but the breakers would trip every time the laserjet printer cycled. We had to switch to an inkjet printer." From what I heard, it was pretty typical, at
1. It's not marketing BS to require your brand of breakers in your brand of panel. That's just stupid. You really want manufacturer A to go through every single breaker design, current rating, sin