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49.152 MHz crystals can be obtained in fundamental mode (mostly in SMD package; 5x7mm is not too difficult to work with, but smaller packages certainly are), however, check datasheets carefully and

tim, I think it would be ok but I have not tested. Try it and let us know.? I didn't get to that. Allison

Skip D used printed shcematic and the print is about.01 high.? Oops, it is T9 collector of Q90. Allison

Thanks Allison.. stupid me i simply did not think before i asked?, i am not young any more and it is very hot in denmark right now and it was also a lot?easier if someone knew Vy 73 De OZ1LQB /

William, Short answer not required.? Though I could as I have I2C displays handy. The UI will not use a rotary encoder.? There will be an up button and down buttons that operate as push once briefly

1n4148 should be OK. Silicon diodes. Raj

first don't remove r2b.. I measure Voltage across the emitter resistor and then calculate it I=E/R. I can run a calculator much faster than soldering iron. The current is highest in Q22 and that will

I would like to drive the AGC board with 12V not 5V and assume this involves changing some resistor values. The voltage divider which biases the FET Q2 appears straightforward enough, changing R3 from

I reversed the orange and purple leads and all is well.? Guess I had the mic wired opposite everyone else. Thanks Howard and Bo!

Hi, Farhan.What are the values of Diode 14, 15, 16 ? Thanks in advance.

Allison do you know how much current Q20, Q21, Q22 draws,the reason for asking is simple,i have a lot of BFR93 and?they only handle 35ma and 300mw .i would like to avoid remove r2b to mesure it

For limited work my butane soldering iron (I think it is a Weller) has a hot air tip that works well. It is as hot or hotter than my embossing gun (cheap from Hobby Lobby or Joann's Fabric) and works

Also, use solder wick to remove as much of the solder on the part as possible first. Dave K8WPE

Dear Allison,? Thank you. Just a few clarifications please: “ I didn't? try 2n2963A as I didn't have any left in SMT but I suspect they would have been better.” I assume that’s a 2N2369A, and

This appears to be a narrower 45MHz filter but impedance unknown https://www.rockby.com.au/catresultsSql_12.cfm?Stock_no=38537

Kj6etl, did you solve your tuning issue? I remember it as seeming similar to the issue I had. In my case it was what I first expected, ie a bum encoder and the new encoder made the issue disappear.

I’m trying to help you make it run on your Mac and for this have some questions, if you don’t mind. So you got a hex file or a ino file from Gary and you had to use Windows for uploading or

Actually it was the fist time for me doing this with rather modest tools. I clamped the board in a small vise and used a spring loaded solder sucker to remove the solder from all the pins on both

Btw, you don't have to remove anything to make the 'pop cure' mod. You can leave that resistor in and add another in series with it on an outboard circuit. - f jgaffke@...> wrote:

Easy enough I suppose, but I do see a lifted pad there, 4 up from the bottom left. The biggest problem with most rework is damage to the board, though that one looks easy to deal with. How did you go