[ARC5] ARC5 project

[Kenneth G. Gordon]

On 19 Jun 2014 at 20:43, J Mcvey via ARC5 wrote:

> Hello all,
> My name is Jim, my call sign is AC2EU and I'm the new kid on the block.

Nice to hear from you, "New Kid" ;-)

> I have quite a bit of electronic troubleshooting and repair experience, but I
> found this ARC5 project a bit more daunting than I thought it would be. The
> problem is mainly all of the "hacking" that was done to these poor unfortunate
> radios over the years.

Yes. Many of us are literally appalled at what we often find.

> So far I only have one T-26 ARC5 receiver

You mean R-26, of course, the "80 meter" receiver.

> working on 12v
> ( with dynamotor) in a modified ARC15 dual rack ( can't find an original).

Innersting... I didn't know they fit.

> My goal is to have a mobile 40/80 meter transmitter/receiver pair in racks . ( I
> found a 12V transmit dynamotor d401 that will probably suffice). Has anybody
> ever used one of these?

I have two 12V dynamotors here which output 600 VDC. As Robert said, 
yours outputs about 400 VDC, but that will work OK. Normal +HV for the 
ARC-5 transmitters was 550 VDC. Dave Stinson can tell you how to build a 
proper voltage-divider to power your transmitters.

> The BC 696 transmitter had its 1625 socket changed to ceramic. That would be OK,
> but one of them is octal for some oddball mod that was done on it.  Apparently,
> the tube is a bit wider than other tubes of this era, so the question is...where
> do I get another ceramic socket?

You can find those on eBay, but you should shop carefully. There are new 
Chinese-made sockets which are OK.

> I've got lots more isssues than that this, but
> this transmitter is the most restoreable one except for the socket problem,
> rewiring it with original components shouldn't be problem, since I have a few
> other basket cases to pull parts from.

Derelicts or wrecks as we call them.

> Any assistance would be greatly appreciated.
> BTW, I have a way of re-stuffing the bathtub caps. If this is of interest to the
> group, let me know and will provide the details.

I am sure ALL of us would be interested. If you could share your method with 
us, we would be grateful.

vy 73 and good luck.

Ken W7EKB