Jim - Thanks for sharing this. That was a mighty long video just to know that he verified that this radio has the added filtering (and associated narrower frequency ranges) to meet FCC requirements fo

---------- Forwarded message --------- From: Eric Struble <eric@...> Date: Fri, Jun 4, 2021 at 10:40 AM Subject: [PCSARComm] Demo: CalFire Air Attack Operations Review "Sand Box Training" To: <P

Orion is certainly right that folding insulated wire back will have little effect on electrical length (thus SWR) unless you bare the insulation on the main length, and at that point connect the end o

#file-notice

Looking for a recommendation for someone to raise a TV antenna on my mom's two-story house in Applegate. I've tried reaching out to 6 recommendations from the Internet/Yelp and HomeAdvisor, and absolu

Just a thought. Could the bridge be acting as a kind of travelling wave antenna, like a Beverage, and re-radiating to the vehicle driving across...?

#antennas

Interesting question. Think I'll try to check it out. - Jef

#antennas

Forwarding this about an open web discussion today at 6PM Pacific time about plans for the HamSCI Radiosport league. HamSCI is group that's a little more science-oriented than most. That, combined wit

Nice work! - Jef

Tonight someone on the Elmer net was asking about ⅝λ antennas with regard to a ground plane. I tried to explain that a ⅝λ antenna is already a complete antenna, so it doesn't require a ground to make

Reminds me of this classic (I have a printed copy on my SCADA test stand): - Jef N5JEF

Very useful reports. Thanks! - Jef

#QST #satellites

Smitty - I've seen a lot worse. A few things to keep in mind: Most of radiation from a ¼λ whip is from the bottom third of the antenna since the maximum current is at the feed point. However, it appea

#antennas

Depends on the frequency and required impedance match, of course... The good thing is that it's a Craftsman, so it has a lifetime warranty. - Jef N5JEF

Another idea might be Grouse Ridge. High up on the hill, not any harder to get to than Robinson Flat. Similarly not conducive to the public stopping by... - Jef N5JEF

Here's a text I got yesterday from Placer County: (211) 1st dose appts. for next week HHS clinic now available: https://www.placer.ca.gov/vaccineclinics Residents 16-64 with certain underlying conditi

Jim - Thank you for caring and sharing this. I interact daily with some people who do pretty much the opposite, telling people "it's no worse than the flu, and a basically a liberal conspiracy" or ref

Good point on the Hall effect sensor in the negative lead—thanks. I'd never seen that before. Will pass along to my colleagues. - Jef

#howto

Generally speaking, just run both wires (both fused) all the way to the battery and you'll be fine. - Jef N5JEF

#howto

In my work we always run the positive and negative radio power cables straight to the battery. And we fuse _both_ wires. That avoids the problem shown in your diagram that can occur if the starter can

#howto

This subject pops up like Whacka-a-mole all across the online ham world, but never seems to get any traction at all. Look at the thread below, and you find people voicing strong opinions about Baofeng