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One watt is enough. Modern carbon film will do fine, they do not drift. Metal film will also do fine. I think Garry used to recommend oxide coated film. Since the drop is part of the measurement of

Carbon film will run at red heat without damage. I spent some of my wasted youth working for a resistor manufacturer. We made established reliability metal film and mil spec carbon film resistors.

In general I'd say use metal film for everything. In this case, maybe consider carbon film and don't overdo the power rating. If the resistor burns out it might just save the tube; metal film can

It is exactly as stated. The adjustment is an old school ceramic trimmer cap conveniently placed on the board in line with the key jack on the rear panel. Since you need key down CW to hear the side

Manual has has been sent. Mike, WB8VGE www.theheathkitshop.com

Jim, There have been several times I could have used a bench test jig for Drake boards. Just a simple thing with 5, 10 and 13 Volt supplies and some AF and RF generation and detection facilities. One

After updating my AC-4, I fired up the T-4XC and am dealing with all of the little usual issues after being dormant for a quarter century. Checked the final Cathode resistors which are 15ohm/1Watt.

Hi Mark, "atlasstuff via groups.io" <g4fph@...> wrote: The trick is to power the board up on the bench from a 10V power supply. You can do a lot of troubleshooting this way. Good

I did email Mike also. Much appreciated! Thanks George NE2I

Ive looked around and have not found any.?Thanks George NE2I

Isn't it on line somewhere? I have done two of the Heathkit Shop upgrades but think I got only an instruction sheet with them. I don't think he has changed the circuit any. Or have I missed something?

I have a paper copy I could scan for you. I can probably get it done this weekend. I’m sure Mike Bryce probably has a pdf available Larry - KB9VY Sent from [Proton Mail](https://proton.me/mail/home)

I need the manual only. Does anyone have a pdf of it? Thanks.... Yahoo Mail - Email Simplified

tnx Craig, your post has strengthened my resolve ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Tom W2TF

I bought the one on eBay with the wires attached and just did my second upgrade. Total time 90 minutes. Attaching the new boards to the chassis took half that time. Remember to tag each wire that you

/g/DRAKE-RADIO/topic/up_date_kits_for_the_drake/78407940 https://theheathkitshop.com/page-3/ This is the URL for the kit. peek at this post. ED WA6WGS

I have an old original AC4R kit (2004) that was never assembled and do not have the manual. Thanks George NE2I

Almost one year since I parked the TR7 with the 'crackly audio' transmitter. How time flies! With the TR4310 now fixed, it was time to finish the TR7. Oddly, I had a couple of contacts on it with no

At last, the promised follow-up on the T-4XC which was sticking on tx. It turned out to be the relay switching tube (6FQ7 in this set). On the tester (I have an AVO VCM Mk3) the original showed as

Hello, fwllow Drakesters... I had a more-than-anticipated response to my semiconductor list. This email hereby closes-off the request period. I will now printo out all the requests and allocate