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There's another possibility: the zener is so weak, it blows open the instant the transmitter comes on. [email protected]> wrote:

Here is an empirical proof to show how a single 1N4756 zener diode actually protects against high SWR. I ordered a bag of 10 1N4756As. I won’t need all of them. Anyone who needs one would be welcome

There are pictures of both rigs with diode installed at the beginning of this thread.

My guess is, it isn't across the RF output. [email protected]> wrote:

Guys, first of all I am not an engineer.? ?Please go to trusdx forum and do a search for 1n4756a.? Read the posting by Sars.? He says no I'll effects, i.e. spurious or harmonics generated.? ?Our

Oops. I tend to give people the benefit of the doubt. It begs the question, where was that zener really connected? [email protected]> wrote:

I built a 6 meter rig back in high school.? I had a WA8 call and collected QSL cards from 20 states.? Then I move to CA and channel 2 TV brought that to an end. Last year, I got motivated to get

I totally agree.? With the one diode as originally proposed, it would clip the waveform and generate harmonics.

Cooy and paste from above: " I? strongly encourage you to install a 1N4756A diode between rf and ground."

David: you would be correct, if the zener were placed across the RF output. Then it wouldn't work at all. The zener would probably blow right away. I got the impression this zener was placed in

My understanding is that a Zener diode "Zeners" in the reverse direction, but acts as a regular silicon diode in the forward direction, i.e., with a nominal 0.7 V forward drop. Since the transmitter

...meters, that is. I have a vintage Heathkit SB-110A 6-meter transceiver that I purchased c. 2000 and am considering selling on ePay. I was hoping to get it going for the first time this past weekend

Does anyone have any experience with this antenna?? I would love to hear about it.? Doug

I knew it.? After a couple of hours fiddling, I realized that you probably can't do it on the phone, and I was right.? Went to laptop and solved problem.? Sorry for troubling the group.? Doug

I have several groups.io groups that I haven't used in a long time.? ?How do I delete them

So glad!! Big props for them

You might want to look at https://www.swpc.noaa.gov/communities/radio-communications Paul

David, woohoo! 73, Eric NF6S ex WD6DBM ? On Mon, Jun 10, 2024 at 1:28 PM, David via groups.io<dkvarn@...> wrote: I sent a message to Steve (Alpha pres) with full set of pix and

I sent a message to Steve (Alpha pres) with full set of pix and received a reply within a few hours. Another tuning box will be sent right away along with a return label. He said that the boxes are

CME hitting today from M9.7 x ray flare on Saturday