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 on: Today at 04:18:08 PM 
Started by W2AEW - Last post by W2AEW
A friend asked me to repair/align his Yaesu FT-107M transciever.  The various boards in this rig are stacked onto a pair of motherboards, much like PC add-in cards.  Does anyone have access to the extender boards that are used to raise the boards out of the rig for adjustment and servicing?  If so, please email me directly at <my call sign> _at_ ARRL _dot_ net.  Thanks in advance!

 on: Today at 04:17:48 PM 
Started by K4ELO - Last post by W5JON


I agree, I have a couple and really like them.



 on: Today at 04:12:31 PM 
Started by TRUTHSEER - Last post by K3UIM
MEM: "Some 20 years ago I was a General. I went to the testing station and took the Advanced and Extra class written tests, and the 20 WPM Morse test. I left there with a Extra class license. I had been a design Engineer for 30 years at the time. It helped a little, with understanding some of the concepts, but good test preparation was the key to passing the tests."
Maybe because it was "earned" it meant a bit more than the ticket does today?? Good point! (Pride in ownership.)
Charlie, K3UIM

 on: Today at 04:09:13 PM 
Started by KD9MRX - Last post by WW7KE
A B&W coil is a coil made by:

As I mentioned in another thread, B&W no longer sells to individuals.  Despite what the B&W website says, they are not listed as a manufacturer in the Ham Radio Outlet catalog.

You can also roll your own.

Probably your best bet.  There are how-to websites all over the interwebs.

 on: Today at 03:56:57 PM 
Started by KF7ZFC - Last post by VK7JB
Hi Cecil - I’d been thinking of moving the inductor up the wire to increase radiation resistance on 40m.  This calculator is helpful:

And with this design, mechanically it’s easy to do because the radiator either hangs from a tree branch or is supported by a fishing pole. 

I’ll give it a try. 

John VK7JB

 on: Today at 03:37:28 PM 
Started by VK2CRB - Last post by VK2CRB
Ok, thanks, got you now. Maybe some magic fingers not being Harry Potter has made something......

The other confusion comes as it appears this model was released with the S version having input of 250 watts PEP and Motorola output transistors.
Do have the service manual, got it last night. I am for a good adventure, here.

 on: Today at 03:33:12 PM 
Started by N4ATS - Last post by W1QJ
Bill, how did you excite the HV diodes and capacitors when you bypassed the step start circuit?

 on: Today at 03:32:48 PM 
Started by K3UIM - Last post by N2OJJ
...I just picked up an old Heathkit DX-60A. I going to give it new life with a custom DDS VFO and see if theres anyone on AM anymore.

I've always enjoyed the notion of AM, even though I never made many contacts using it.

My father had a dx-20 with external VFO and a bunch of Hallicrfters. I had an S38 on my  ight table.

I also remember a Gonset or 2 and a lot of lafayette stuff. We'd go there almost every week.

 on: Today at 03:16:12 PM 
Started by K4ELO - Last post by MM0NDX

 on: Today at 03:15:51 PM 
Started by N4ATS - Last post by N4ATS
On a plane headed home.  Yes of course the HV in not connected during testing. The single connector is pulled so the shorting bar is out of the circuit. I will check R17 tonight..also tube pulled...I fix many Alphas however this one is a winner

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