开云体育

Hi Paul: On the FET thing: a friend named Steve, who's input I value highly, recently suggested FET Avalanche Breakdown should be like a reliable zener, with wattage-rating equal to the FET's power

K6YA

What call will you be using??

This Friday, I will be preparing for the ARRL FD contest exercise.? QTH is Maryknoll.? We have a nice flat field next to the building with pagoda roofline which you have seen from 280 a bit north of

Let's do the glow in the dark thing for Halloween!

Cliff, I think Peter was talking about more keeping it 'invisible" by using they grey color rather than protecting it from UV. ?I opted to get the flat black as was suggested by the hex maker. I did

I don't think color matters much for UV protection. I had a 20 year old fiberglass antenna painted OSH white in perfect condition.

Customer support that actually answers the customer's question!? Amazing! My speculation is that black will do the best job of absorbing light and protecting the fiberglass.? I would suggest a final

OSH spray paint is made by Rustoleum. (I'm holding back on the real deep paint nerd exposition.)

KIO recommended Rust-Oleum in a flat black to paint the spreaders. The Rust-Oleum website had a gazillion paints to choose from so I sent a message for their recommendation for painting fiberglass and

No, Cliff is not crazy when he says go to OSH. The old "OSH" which was Orchard Supply Hardware did go out of business ?years ago, but there is a new chain called "OSH" for Outdoor Supply Hardware. We

I recall some comercial antenna painted a light grey blue.

I'm not saying it's not possible to blow the finals. I'm just looking for the side-by-side test or measurements compared to specs on the same radio with and without zener, and am surprised that I am

Hiroki did it twice.

Connie,? when you blow your finals. (Not if, but when), I have plenty of replacement transistors,? which are not trivial to remove.? Lol. Doug

Is there a side-by-side test documented anywhere? Ie, showing that the radio is destroyed without the zener diode under the same conditions otherwise? I couldn't find one. They're cheap -- you'd think

I drove home from Chester yesterday, and am pretty tired.? I hope to see you all next week. 73, Eric NF6S ex WD6DBM ?

Thank you Hiroki for your validation.? ?I heartedly encourage everyone who has usdx radios,? including the one from Ed Fong to do this simple mod.

I installed a Zenar diode to protect my (tr)uSDX against high SWR and replicated the same experiment conducted by Barb WB2CBA (the video I forwarded to this forum a while ago). With a dummy load the

Consider grey paint, less visible