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I mean into a dummy load

Just to see whether it puts out the correct amount of power why not just keying down CW?

Allison, why would the MMICs oscillate and not a 2N2219A? Might screening of the mmic help? Iz oos, Simple the board layout is not suitable.? Screening is not effective. Allison

Mini Circuits have developed many MMICS with better imd specs than the MAV or the ERA. The many Gali and the Pga don't cost much more. Maybe it would be worth to test these for TX purposes.

This is exactly the layout I am suggesting Tom. It is very difficult to make such an amplifier oscillate with external stimulation due to the transmission line layout and low component count. One

?very interesting. ________________________________ Sent: Friday, September 14, 2018 2:07 PM To: [email protected] Subject: Re: [BITX20] 2N2222A vs 2N3904 sourcing Assuming the MMC amps can work

Allison I can see how that could happen if trying to fit the MMICs into the existing board layout. One critical thing has changed however: we have moved a PA filter section that was laid out extremely

Ok, I think I have this solved. Really short version: It appears that my major problem was the laptop that I was using for FT-8.? The laptop that I have been using is not putting out consistent

Assuming the MMC amps can work without the issues that are being pointed out, the idea of using an assembled amplifier board, for us retrofitters (like the assembled filter boards folks are creating)

I just noticed that from the first picture it's not so clear about what connector I was talking about, so I'll upload a new picture.

Hi everyone, again! Today I got a really big present from PostNord Danmark. They arrived at my house with a small box shipped from INDIA. Of course, it was my new uBitx. Yay !?The shippment was

Allison, why would the MMICs oscillate and not a 2N2219A? Might screening of the mmic help? that provides 20 dB of gain nearly flat out to 4 GHz with a 1 dB compression point at +18 dBm. It is 50 ohm

Expliquer en anglais, s'il vous plait. Allison

Warren, Both Jerry and I tried? that.? I use MAV11 a lower gain higher output part and getting to oscillate in ubitx environment was trivial.? Getting non-oscillation was very very difficult.?

Allison, Yes, it's like herding cats ......? many different ideas, many cats. 73 Kees K5BCQ? ajparent1/KB1GMX ( /g/BITX20/profile/383014 ) 8:00am???#59377??(

I have ordered many small parts off ebay from China. One has to be very careful as there seem to be many substandard parts. You may get a good batch from one source and a bad batch from another. I

Ok Warren, sv1avn is a good supplier as rf-microwave is, of course if you test the mmic from the Chinese supplier are ad good too I might well consider it. Thanks for testing them and keep us

If yours has 16 pins along the bottom you got a raduino configured for the ?BITX.? The BITX40 raduino has 8 pins on top and 5 on the bottom.? Except for the pins the hardware is the same and you

retrouver 7.150 à la mise sous tension

The 23 dB gain, 2.4 GHz MMC amp module I tested is here:?https://www.sv1afn.com/wideband-mini-amplifier.html? ? ?It costs $17 delivered from Greece. WA8TOD