KWS-1 transformer specs question

[Opcom]

What are the secondary volts and current on the KWS-1 HV transformer? Isn't it some 2900-0-2900 @ 500mA? Trying to verify what a friend has, maybe a NOS one.

[W3GMS]

What are the secondary volts and current on the KWS-1 HV transformer? Isn't it some 2900-0-2900 @ 500mA? Trying to verify what a friend has, maybe a NOS one.

I just pulled my KWS1 manual and the parts list states its 5000V TV.  Not sure what the TV stands for but maybe its "test volts".  The schematic shows labels on each secondary winding as 2000V.  I would take that as 2000V in reference to the CT connection.  Since the HV runs around 2KV under load and it uses a choke input filter, I am more inclined to believe the parts list.

Joe, GMS

         

[Opcom]

TV may mean Test Voltage, as to GND, etc. That beast also has a small resonating cap across its choke, right? It could affect plate voltage a bit more lower, meaning a slightly higher secondary voltage. I'll get some pictures of it. If that's what's had, it's a trash-to-treasure story allright.

I had a KWS-1 before, many years ago, maybe 1990. I have always wanted one again, but the cost has gone up a bit since then. I know where I can get a 75S-3 or 4. That would be a real nice setup. Not sure what tuner is supposed to go with it. But, having the plate transformer is like having a front porch and needing a house to go with it.

[wa3dsp]

I am sure you would get info on that on the CCA forum. You might try that.

[W3GMS]

That beast also has a small resonating cap across its choke, right? It could affect plate voltage a bit more lower, meaning a slightly higher secondary voltage.

Collins resonates the filter choke on many of its designs.  When the supply load is minimum, the choke is resonated by the parallel capacitor placed across the choke.  In this case, it would resonate at 120 Hz offering a very high impedance.  As load current is drawn and the choke inductance decreases, the parallel combination is no longer resonated at 120 Hz.  

To add clarity on the transformer,  its a single center tapped secondary.  My previous post made it sound like multiple secondaries and that is not the case.  

The KWS1 is a great rig.  Mine worked very well until the filament transformer for the HV rectifiers developed a secondary short to ground.  Fortunately Peter Dahl was going full force and had an exact replacement for the original one.  

Joe,W3GMS

      

[VE3AJM]

My old Peter Dahl transformer catalog had their replacement for the KWS-1 plate transformer. The secondary winding as 4800 VCT at 800 ma CCS. Collins part # 662-0155-00.

Al VE3AJM

[W3GMS]

Thanks Al for that info. 
Joe, W3GMS