Might have. I don't see any reverse polarity protection in the schematic online. I hope that there was a diode added in later models that would have prevented a reverse polarity damage situation. Thos

Even if you zapped it , you'll get if fixed, no doubt. Hey, I wish I had a nickel for every time I plugged something in backward. You just proved you're human when you did. Welcome to the human league

On Tue, Aug 18, 2020 at 5:28 PM n5ib_2 <n5ib@...> wrote:n 2m when we were out walking the trails on our "bear hunts". Couple of photos attached as well. All-in-all a wonderful getaway. Now there'

Will the IRF510 in the NS40 transmitter by 4States handle 24 volts DC in the final of the transmitter safely? If I add a 12 or 15 volt regulator in series with the 2N7000 oscillator transistor (to kee

Just finished a retro rig (6AW8 / 6BQ6 40 meter MOPA transmitter) based on an 15 meter Novice transmitter article in the April 1959 edition of Popular Electronics magazine. It works fine and I've made

Eugene: Here is a USA source of crystals for two of the 60 meter channels: <https://kc9on.com/product-category/crystals/> This is the location for KC9ON's 3rd Planet Solar site. He has crystals for "c

EuGene: Curious here. Did you build one of the GW3UEP 60 meter transmitters? I just finished one and it works great. It puts out around 5 watts output when powered with 12 volts DC. If you did build o

Hope it see it soon (knock on wood) AK4JA

RE: programmable crystal IC/chip I mentioned earlier about a QST article that used one in a 30 meter Whisper transmitter. (that was the first incidence I remember hearing about them) I have found the

For those of you that may have some trouble manipulating image files, here is the same schematic photo as sent earlier but oriented so that one would not have to use software functions to rotate the i

Seeing those FT-243 crystals plugged in to the little transceiver reminds me of the ones I ordered from the same company as those two crystals back in the 1990s: CW Crystals Marshfield MO Got some fro