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I copied this link from Google, after inserting qex Audio agc the full article is named: synthesing an Audio AGC circuit Phil Andedrson W0XI published in the QEX Sept Oct 2010 Henning

that link seems to be broken...

please have a loog on www.arrl.org/files/file/QEX...Oct.../Anderson%20Sept-Oct.pdf Henning DK5LV Am 01.06.2017 um 09:58 schrieb Ashhar Farhan:

Another easy way out, we investigated it for BITX boards as well, is to use fulfillment by amazon (FBA for amazon citizens). - f wrote:

this can be done much easier with a 2N7000 as it doesn't need -ve bias of the JFET. I don't know if you have seen the AGC circuit in the BITX hacks - f wrote:

More than a couple of decades ago I was working on a rural radio project and I built something like this. This can be used in Bitx for mic and amp with no switching voltages required. T1 is also not

Hi Kevin I find that most stuff arrives within 10-15 days 73 de Charlie GI4FUE

From NUTS and VOLTS http://www.nutsvolts.com/magazine/article/fet_principles_and_circuits_part_2 http://www.nutsvolts.com/uploads/wygwam/NV_0600_Marston_fig18.j

Not the same as the as the 328. There is no 12 volt connector on the Raduino processor. There is on the R3 or 2560. The information you supplied refers to them. The 328 is powered from the 5 volt

Hi, I decided to do Bitx20, I use 10 MHz xtal, card is over and I get energy, whistling, what could be the problem. Nobin was wrapped with 8 rounds t50-2, thank you.

Hello, I decided to do bitx20, I used 10 MHz xtal, I ran out of card and got energy, I hear whistling sound, what could be the problem. The trailers were wrapped with 8 rounds t50-2, thank you.

It should not be done. Putting two sources in parallel that may be at a different potential is never a good idea. While it may or may not hurt the BITX, it could play hell with the computer USB

Hmmm... OK. ?Well, thank you for at least replying to my post.

Same transformers are available from China, 10 for 3$ with free shipping or so. Some sellers with 2/5 pcs even cheaper. Raj

Possible. ?Wants $1.39 + $3.15 for shipping, so the transformer is kind of painful. Especially with a thousand or more rigs spread around the world now. I'd probably advise that most just live with

Thanks for the part number. I am using the Bitx40 schematic from his Bitx40 web page, and it still shows the 1N4148s.... I am right now comparing the schematic to the Bitx40 board I have and marking

it is BAT54S in sot23 package. It replaces the two 4148 diodes used for de-modulator. Once it is mounted the balancing trim pot can be bypassed. also one capacitor could be removed. please check

Jerry, We could put an audio isolation transformer between the mic/preamp stages and the mixer. The mixer side will need to be ground isolated then Allards CW will work and probably the carrier leak

What is the part number for the dual diode package "D20" on the Bitx-40 V3 board ? -- David Martin - NA1MH <https://www.qrz.com/lookup/na1mh> - Mountain Home, Ar.

A very nice $0.01 solution. Except it kills how Allard is doing CW. He unbalances the carrier by putting 5v into a 10k resistor that goes to the top of C107. Maybe fix this PTT pop somehow in