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I distanced myself from Amazon a few years ago when they switched to a format where you couldn't identify the vendor before or after the sale. ?Even before that you couldn't tell if something came

FWIW the only thing I have ever bought through Amazon was the obscure SCR for the PS7 crowbar, and that was from American Microsemi which I knew to be a good vendor. Otherwise life is just fine

Hi i have problems with Drake-RADIO@groups emails, Can you cancel all information what i get . I am sorry abt that info have been ok but its make big trouble For my other trafic 73 de Tapio OH1KBX

Mike, The fine print did make it clear that I would be put on Autopay. I have recently read about how hard it can be to cancel Autopay at Amazon. I really don't want to find out. Bill N0CU

Bill, Sorry to hear about your escapades with the PLJ-8LED. I imagine the QC on those units is a hit or miss. I hit 1000 when I ordered my 2 a year ago, no issues. But that was a year ago. Sounds like

I decided to purchase a PLJ-8LED freq counter last month to see if I could get it to work with my R4-C Even though it was $10 higher in cost, I went with Amazon because of their simple return policy

Good morning ! I’m looking for the case for a Drake 1-A. Can be rough as long as there are no dents or extra holes Email me W5sum at yahoo.com! Thanks Ronnie W5sum

Hey Gary and everyone, when I come home from work this afternoon I will try to set up the Drake and take those measurements. It would be nice to get it working. Mark

First check to see that you have the 10 volts DC to the PTO. Then measure the resistance from the PTO Output to ground. It should be above 270 ohms. Then use your scope or spectrum analyzer to observe

The IF frequency is 9 MHz but you should not be seeing it at R48. It seams to me that any 9 Mhz leakage should not be strong enough to be picked up by the counter over the PTO signal. "Mark N2DMI via

It's a high impedance circuit so drop across 100 Ohms would be minimal. What I would suggest is that you check R48 for visible damage, bad solder connections, and measure it for value with your

The 9Mhz showing up on my DD-103 must mean something?? 9Mhz is in the rig somewhere, right? Mark

I think its R148 and not R48 Ken. Mark

Ken, I do have an O-scope. So your saying to remove the PTO signal wire from R48 and then measure the PTO output signal voltage. Then re-connect the PTO signal wire back to R48 and use the O-scope to

Looks like R48 on the marginal scans of schematics that I have. 100 Ohms feeding the grid. C12 would be included in "checks around V1". "n4buq via groups.io" <n4buq@...> wrote:

I meant "fact", not "face". Ugh. Friday night fingers at work. Barry - N4BUQ

Apologies. I wasn't thinking of the face that Mark has a TR-4C, not a plain TR-4. R48 is indeed the correct resistor in the C model. 73, Barry - N4BUQ

Forgot the attachment. "Jim Shorney via groups.io" <jimNU0C@...> wrote: -- 73 -Jim NU0C

Did you possibly mean R148? Also, the signal would go from that resistor through C12 to the grid. 73, Barry - N4BUQ

Here is your circuit. The PTO feeds the grid of V1B via R48. I think I would look at R48 first, then make some checks around V1. Disclaimer: I have not been inside any TR4 in decades. "Mark N2DMI via