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Good morning Andy and all: I have had some luck using large steel cookie and or cupcake sheets under a good Mag Mount, preferably lying on the ground but with some luck on a dining room table with

On the v3 I have found a slight but noticeable decrease in the sound quality when I have increased the voltage to the receiver. I suspect that the op amp is being overdriven. The easiest way to limit

I haven't read all msgs in this thread closely but if you live in an apartment with a balcony with a metal railing you might consider a mag? mount centered on the railing and connect the railing

For your "sheet of metal" to be large enough to be effective, it would most likely be objectionable, too. I second the recommendation someone else gave you. Try using 1, 2, or 3 ground radial wires

I know I have said this before but I will again now without malice. The manager of the property is behind me working to build out a working Hf/vhf/uhf station. They let me put a hole in the wall to

My V4 shows a 470pf at C81, and my comment was a reflection of a bad pencil note on my "to do" list. Previous posts had suggested 0.01uf across C81 as improving the low power on 40m, so that's what I

For portable use I have used a clamp-on mount (also sold to make a hamstick dipole) attached to a metal stake. Sticking that into the ground made a usable antenna. In cases where I didn't think I had

Hello, I’m curious what I would need to do to use a mobile mag mount for an HF whip without mounting it to a car. I’m guessing I need to get a large sheet of metal to act as a ground plain.

Thanks, I was lucky enough to be given a complete transceiver I don’t want to mess with cutting traces and modifying it until I have everything set up. I just wanted to make sure I didn’t need to

In the v3 the audio output chip is at its limit with 12 volts,the PA can be run from say 15. or a bit more for increased rf output Get Outlook for Android<https://aka.ms/ghei36>

Sorry. I sm withdrawing my statement. V3, the TDA2822 WILL LIKELY GET DAMAGED AT HIGHER VOLTAGE. LIMIT TO 12. After all you can reduce 13.8 to 12 by some pot on the psu.

I use 12 volts but a higher voltage can be delivered to just the PA feed to boost the rf output. Get Outlook for Android<https://aka.ms/ghei36> ________________________________ Sent: Friday, April 3,

You can use q3.8. Pl dont again say + /- All the best. wrote:

Hello, I am currently feeding 12 volts in to my v3 uBitx. I was wondering if I should be using 13.8 volts. Will that blow up the 5 volt regulator? Thanks, Chris KF4FTR

One amp is not enough, you need a 3 amp supply to give a little head room.

Once you get your antenna figured out, you will want a bigger power supply. The sag would be significant. As would be the electric noise. -- 73 Dave ADOB ( https://www.qrz.com/db/AD0B ) Raduino

Curt, I wasn't arguing against your advice.? I merely stated what Allison said worked well for her.? She made other modifications too, but the order is not always clear in the older posts.? In any

Mark perhaps she made other adjustments, as mine improved greatly with just a few hundred pF added at C81.? please see Asshar's post about C81, I think my adjustment is consistent with what he was

Hi Vic, Adding 0.1uF will result in basically no frequency compensation for Q90.? Looking at past posts, Allison ended up with a total of 1100pF for C81. 73, Mark

I just finished constructing my full kit uBitx v6 and powered it up with a 12v- 1amp wall wart. When I connected to my Mag Loop antenna, I did not receive voice nor CW. However, all the icons on the