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Ummm....maybe I confused the issue. The gate can be at RF ground, and at +(adjustable) bias voltage, while the souce is at input RF and grounded DC (through a coil?) Or the gate can be at both dc

Hello Gordon, I will look into where I can find firmware V1.24 and give that a try. I know the Bitx40 is a SSB transceiver, I just find it easy to operate CW and have more QSO's than on SSB. Guess,

Very Nice David! Wish, I had some of your smarts! 73, Jeff - K9JP -- Not all of me will die - - - The good I do will live forever. <><

Arv: As Gordon points out, the grounded gate configuration applies to the exciter, not to the final...a power MOSFET must have a gate voltage. I wonder, since the gate capacitance is ca 180pF in the

Thank You Al - VE3RRD, I had to update my Arduino IDE on my netbook, I then followed your instructions at the link provided. https://www.dropbox.com/s/s327me4umdckcpc/Raduino_SW_install.pdf?dl=0 I

The ZM-2 should work well for a uBitx at 12v. But if you feed the IRF510's 24v, you can get way more than 10W.

?Another person asked about SSB --- yes, grounded grid (and gate) should be usable for SSB. Nothing changes about the linearity (or lack of) in the device --- just the input impedance presented to

?Jeff -- If you can't seem to get it figured out, i or probably several others could walk you through it over the phone. If you can get BLINK to work, then you seem to know how to compile and

?In grounded grid (or gate) configuration, I believe all you may expect is basically VOLTAGE GAIN. if yoiu have a 50 ohm input impedance and you are feeding the cathode (or source) then your driving

John AD5YE I understand that some people take "Grounded Grid" and "Grounded Gate" literally, but the Grid or gate could be at ground for RF but not for DC bias. That is common in several Ground

From what I have read the ubitx is about 10w. I could be wrong. ?As for the zm-2 I have used it at 10w-12w all day with no issues the swr bridge shouldn't be used on more than 5w or so. ?You can

A "grounded gate" of what, Marco? Not of the IRF510 or any other MOSFET. The current through the device is determined by the gate voltage. with a gate at 0v, the current through the device is

Marco KG5PRT and Rahul VU3WJM Grounded Gate with a pair of IRF510's in push-pull configuration is interesting. I may have to try it sometime. In tube technology the grid is placed between cathode

Webpage says 15W max, the uBitx can do more than that. Could be the tuner is good at 15W only if the antenna presents a reasonably low SWR, anybody know?

I cheat. I have the same tuner but use a Youkits FG-01 antenna analyzer to tune the tuner, then connect the tuner to my QRP rigs. I also use it traveling with different end fed antennas and light

Look at the Emtech ZM-2 its a fun build not to pricey and works great! It tunes almost anything and getting 1:1 is easy. I have used mine for some time now and love it, wouldn't trade it for the

Ok so its done! specs are as follows 24v Source 5w drive Total amps CW key down 2.998 on 40m got just short of 40w out swr on all bands 160m = 1.02 80m = 1.04 40m = 1.10 30m = 1.16 20m =

Much of recent CAT related discussions on this group seems to have focused on the radio end of the control scheme. Only a few comments have mentioned commercial and non-commercial PC software to work

Would grounded gate work for SSB? Marco - KG5PRT [email protected]> wrote:

Thank You Mark, Define “not working?” Do you still get any output on the display? Just black squares. My guess is there is no program loaded. Do you get any audio out the speaker at all?