[ARC5] The value of MO and PA tank components.

[Roy Morgan]

On Mar 23, 2016, at 2:57 AM, Leslie Smith <vk2bcu at operamail.com> wrote:

> 
> To all:
> 
> I wish to learn the values of the oscillator and PA tank components in
> the ATA, SCR and ARC-5 transmitters.

Leslie,

It’s very likely that SOME one has the details of the things you seek.  But maybe not.

I have here a stripped transmitter chassis from a 5.3 - 7 mc transmitter, marked ARC 9311.
The oscillator parts, and the main output tuning cap are basically all that remain on the chassis.
The parts of interest are marked:
  Osc Coil: 6031, 
  Osc padder cap: 4990
  Osc tuning cap 5032
  Main tuning cap: 7321

I also have a Boonton 260A Q meter which presumably can measure the values of these parts at the appropriate RF frequency.

The only way to measure them, however, is to disconnect them from the other related parts. That is relatively easy to do on this stripped hulk of a transmitter, so it would be  possible, and would not destroy the functionality of a working transmitter. 

If you are unable to find details of these parts elsewhere, I can put the project onto the to do list, though it might be a while till it rises to the top.

Roy 
friend to all things ARC-5


Roy Morgan
k1lky68 at gmail.com
K1LKY Since 1958