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No. A rheostat (variable resistor) from R15 to R16. Check the BITX Hacks blog. Lift the end of R15 that connects to C14 and insert the rheostat. Or the switch. The idea is to reduce or eliminate power

A pot from R15-R16 to ground?

Have you seen their shipping charges?

OK, first post. ?AC7QN here. Assembled my BITX40. Output into 50 ohm dummy about 2 watts. Per instructions connected ammeter in series PA supply: ?.07A idle, .190A when PTT activated and .190A when

Just topped off my build with a battery monitor. I had a couple of 'free' Analog pins. Since I'm 'minimalist'-ing this BitX, it has only 16 characters on the LCD, so, every character counts. I

I already have some 40mm x 40mm square heatsinks (not drilled or tapped yet) with fourteen 19mm deep fins (heatsinks are 23mm deep overall). Would one of those possibly be sufficient? RichKC8MWG

How do you wire the second pot in series? 72, Bob KI0G

Something like that will work. There are plenty of good sources without resorting to something "specific" (and expensive). Computer power supplies and cpu coolers are good sources. Inverters and power

Hi!, Very simialr to AGC proposed by Farhan, Russian Klopik Transceiver also has a AVC made around LM386 using single 2N7000, we can also give it a try in Bitx.? Klopik schematics here:

A switch between R15 and R16 will act like a 20 dB attenuator. Or insert a 10 K variable resistor there for continuous control from zero to 17 dB. -Don, ND6T

right ....maybe also one attenuator approx 20-30db in rx part ;)

Also check out Ashhar's AGC circuit here: ???http://bitxhacks.blogspot.com/2016/11/agc-for-bitx.html ( http://bitxhacks.blogspot.com/2016/11/agc-for-bitx.html ) (

From Ashhar's post 18062:"The capacitor between pins 1 and 8 of the LM386 can be removed if you prefer headphones to speakers." Check the LM386 datasheet if you want further info on this. Though I'd

Strong signals are way too loud with headphones.? What is the best way to deal with this? The problem is mainly with high power stations chatting about their amps and beams.? Some powerful signals

the transformer might have shorted its turns. try moving the windings apart. - f

Thanks. Well it looks like one of transistors in the VFO is gone. Next to no drive at the transformer. 73 Ken 2017-01-22 11:35 GMT-05:00 9a3xz <socijalizam1@...>:

No problem Joel. 73 Ken

8ma is aprox 10dbm. Poslano preko Samsung Mobile ure?aja

Ken, I didn't see where the drive level was specified only the crystal load. I believe when not set, it defaults to 8ma. Sorry, I got the two confused. Too early on the west coast:-) Joel KB6QVI

8ma drive? 73 Ken