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The lower part of the shield provides enough shielding without causing overheating. Nothing is missing.Sent from my Galaxy

While doing a lot of maintenance and repairs on my rig I noticed that the tube sockets for V6 and V7 were set up for tube shields. Yet neither one has a tube shield. In my manual neither tube shows a

Good morning all: I have never seen the AC-4 6-32 threaded foot ever installed on a 4-line box, new or used, and have owned upwards of 50 of these boxes and accessories over the years. The new 4-line

If they're simply stuck on, chances are that they're not original. There are some rubber "nub" feet that came from Drake. They look like the ones that are usually found on the AC-4 (and that is where

I just picked up a Drake T-4XB and noticed it came with very short rubber feet. Is this stock, or did someone remove the longer feet and replace them with the short stubby ones? They appear to be

David, Thanks for the picture showing that those little Chinese testers can measure electrolytic capacitor ESR. I had no idea mine (a 'Multi-function Tester - TC1') could do this, as I have always

Look at the front board of the High Pass Filter module. On the back side you will find a lone push pin connector near the edge of the board and near the top corner where the chassis ground strap is

Hi everyone, thanks for your help. they say don't work on a radio tired. Well it was the PBT button pressed. Signs of life now, but the cal seems weak. On 7 mhz it is a little noisy and the S meter

MY mistake, I apologize. ? That is what I measured a few years ago before installing the soft key.

24-28vdc is what I measure on mine. ?If you want specifics out to two or three decimal places I can do that for you. 73, Evan, K9SQG

Dave, I don't have one here to measure. Research reveals zilch. So I'd just like to know open voltage at the jack and key loop current of an original L7 if anyone happens to know conclusively. Thanks,

Excellent! Yes, the 455 kHz wiring between the receiver and the multiplier was simple multiconductor cable. It may be shielded but I'd have to take the 2-BQ apart to know for sure. RG-174 is certainly

Thanks Jim for the info and I will try and get back at it tomorrow. 73, Jim VE1RB [email protected]> wrote:

The QF-1 to a Drake 2A ?adapted and working as it should. ?Maybe any 4wire cable would do. I used old heath power cable and a rg174 coax for the IF.

I believe I've measured 24-28 vdc but don't remember the current. ?Issues are voltage, current, and inductive spike. ?I've install a RadioGadgets ?UKA-1 I believe, inside the L4B and L7s that I

About 30-35VDC My IC-7610 has no problem with that as long as I use the FET switch but most SS rigs won’t do well with that. Those rigs will need an interface. Steve Wedge, W1ES Time flies like an

You can just measure it, but if it helps, YES...it is above the limit on most rigs, and will need an external relay. I went through this once myself! ....Dave

Howdy guys, I would like to know what normal open voltage and key current is at the VOX RELAY jack is on the L7. Thank-you, Jim WA9Z

Yes, you want to look at the 2nd IF/Audio board. CW operation is described towards the end of the text in section 2-11 of the service manual. In short the CW transmit carrier is generated by a crystal

Hi once again. I am back trouble shooting the TR7 with what I hope is the last problem. When I switch the mode switch to CW I get a 1800 cycle tone in the receiver that is over S9 in strength. If you