Protection board(s) for transmitters.

[rigmo]

Hi, I used this thermostat for the temperature and it worked well for me. I suppose there will be better circuits but this is simple and cheap.
A greeting!!!

W1209 Blue/Red light DC 12V heat cool temp thermostat temperature control switch temperature controller thermometer thermo
4.9
2021 Reviews4388 orders
US $1.61
https://www.aliexpress.com/item/32225252366.html

[rigmo]

what is happens with this sites? tnx
http://www.radioaficion.com/HamNews/art ... rcuit.html
http://213.114.137.49/use/vswr-00.htm
http://jugglingpirate.net/swr-protectio ... imple-way/

[yellowbeard]

The internet archive has the jugglingpirate one, the radioaficion they got has no pictures - no use without the diagrams, and the third one is not archived:
https://web.archive.org/web/20170602070 ... imple-way/

[rigmo]

The internet archive has the jugglingpirate one, the radioaficion they got has no pictures - no use without the diagrams, and the third one is not archived:
https://web.archive.org/web/20170602070 ... imple-way/

recording from text and photo name... https://alectronicx.blogspot.com/2010/0 ... me-is.html

[rigmo]

SWR Protection 2024
The view operating video of the small, powerful, and sensitive Self restart or permanent SWR protection, current power up to 35A
sensitivity adj 240mV - 2.4V
Auto restart adj 3sec 1min