BC-610(E)
REFURBISHING
PROJECT

For a while my RTTY rig, the BC-610(E) and accessories was on loan, to a friend, who was an
operator in World War II, and wanted to play with the units again. After he was done, the unit came
back to "roost", and I decided to clean the rust and dust from the unit before putting it back into use.
The power supply deck, which is also the heaviest, needed to be cleaned up of rust on the underside
so I started there first. I completely removed all the components from the chassis, sanded it down to
the bare metal, and applied three coats of primer type, rust inhibitor paint, allowing it to dry in the
very limited summer sun. For a day, per coat of primer, which seems like long enough for this section.

Then it is remount the parts, HV choke, filter caps, and filament transformer for the 3B28 rectifiers.
Then on to the other side for the "Real Work", mounting the H.V. power transformer, in preparation
for rewiring the H.V. chassis. The Tygon Tubing used on the HV leads was Megged out at over 5KV
breakdown  voltage so I installed that wherever needed. It covers the leads to the Plate connections
of the 3B28 tubes, used as rectifiers. Also on the center tap lead to the transformer. The "New" red
leads are Belden 5 KV wire.

Although some of the photos show up as being green, that is from the light reflecting off of the building
immediately to my rear when taking the pictures, sorry about that, but we don't get a lot of "Sunny Days"
so lighting outdoors is a problem.

Then flip the whole thing over and stand it on end,
to show the layout.




Straighten it out and get ready for the 3B28 tube sockets!









Then get the chassis wiring harness
ready for installing.




We need to remount the rectifier tube sockets
on their plate with the connecting leads.





Connect up the Filament transformer
and the Filter Caps.





Mount the insulating strips, Barrier terminal strip
on top, and wire up the Filter Choke
Filament C.T. and HV output.




Bring out the HV leads to the Bleeder
and the leads to the HV overload
relays.





The primary AC input to the HV transformer are next,
along with a "Tygon Tubing" cover for the
HV Center-Tap lead.

Tygon tubing when tested with a "Megger" can insulate
up to 5KV, so added protection is there.





The leads to the HV transformer
top-side connections.

Note the "Tygon Tubing"
on the HV leads.




The "NEW" plate cap leads.





Top-side Barrier Strip connections
and leads for the HV Overload
circuit.





Lastly the connections to the HV
Bleeder resistor and the
HV overload relays.





The Bleeder looks a little over worked
but my digital meter
says it is still 80K ohms!