Carl - When I saw your post of the Yahoo chart of risk activities I was skeptical—until I saw that they included Pontoon Boat Rides—then I had to admit they must have done some extensive and careful r

Gerry - Thank you very much. Guess it's still not time for me to buy a new radio... - Jef

Wondering if anyone with experience with the Yaesu FTM-400 might be able to comment on the following items from my VHF/UHF mobile radio wish list? I'm finding it frustratingly difficult to get the que

Thanks for sharing, Carl. - Jef

#howto

Greg - There were three kinds of loops shown in the presentation: Full wave loop -- horizontal plane With circumference of roughly a full wave, maximum radiation perpendicular to the horizontal plane

Here's a serious proposal for an ultra-low noise, high-gain dish antenna for HF 6-30MHz. Link - Jef N5JEF WQYJ498

Thanks Jim. It's useful information, and I guess even we "technical" folk can benefit from reminders to respect science--not as absolute truth, but generally much more reliable than anecdote and folkl

Thanks for sharing these Rob. Inspiring to hear about some of the range of responses to our shared situation. - Jef

Gary - I have a Goldstar OS-9020A that may borrow (or buy) if you think it meets your needs. No probes. For example: https://www.ebay.com/itm/113863681496 - Jef

#repair

Thanks Stuart! Good info to file away for when it might be needed. - Jef

#emcomm

Indeed! That would be a fun project. I like the built-in anti-kerchunking and how it enforces good operator practice such as waiting at least a half second before talking. And the elegance of requirin

Nathan, if you think having a repeater with no PL tone is interesting, take a look at this info about the Seattle Repeater Group's system: - Jef N5JEF From http://www.qsl.net/srg/index.html On Wed, Ma

I should probably mention also that the inverted V configuration for NVIS is very easy, but not ideal because it can pick up significantly more noise from (1) moderate distance lightning storms, and (

#antennas #elmer #emcomm

That's a handy way to set up for NVIS in the field with only a single (central) support. The important thing is to get the center up at least 1/8 wavelength above the ground for efficient NVIS--so at

#antennas #elmer #emcomm

A couple more attachments for anyone interested. These provide a more rigorous discussion of NVIS in general, and antenna height in particular. Short story on antenna height: A horizontal antenna betw

#antennas #elmer #emcomm

Dennis - I am pleased but surprised by your email and your interest in NVIS at this time. Two years ago, on February 21, 2018, I had requested and argued that #NVIS be one of our group keywords and wa

#antennas #elmer #emcomm

Jim - Thank you very much for speaking up on behalf of science, reason, and best practices--as we currently know them. That's nice to see in these times of extreme hype and popular echo chambers. - Je

http://www.oesnews.com/grass-roots-radio-solves-rural-norcal-communitys-disaster-communication-quandary/ https://youtu.be/2uhOwng_j38 Cal OES this morning published a brief article and link to a 3-min

Brian - The choke really should be at the antenna feed point. It is intended to present a relatively high impedance at that point, and minimize common mode radiation from the feedline. What's your hig

Nice! +1 for real actions to promote community safety! - Jef N5JEF / WQYJ498