Hello Garey, Stew, and the group. A new guy here.
We've seen three (3) different versions of the higher voltage R-4C
can-cap:
200/100/20 uF @ 200V as you mentioned,
100/100/20 uF @ 200V,
and 200/100 uF @ 200V.
I have it in my notes somewhere that the 200/100 was used in S/N's below
21000. The 200/100/20 started started with S/N 21000. The 100/100/20
is a mystery. We've had a customer in Canada with two rigs that had
this one, both late S/N's. I don't recall the conversation at this
point, but I remember that we concluded that these were factory installed.
On the advice of a certain Drake guru here, we've chosen to supply a
200/100/20 uF @ 250V for all the units which take a three-section can,
and a 200/100 uF @ 250V for the two section can.
The lower voltage cap we supply is a 3000/1000 uF with the voltage
bumped up to 35V.
I'd be interested in hearing anything further on the subject.
Tnx es 73,
Tom
www.hayseedhamfest.com
Garey Barrell wrote:
Stew -
3000 / 1000 uF @ 20 VDC
200 / 100 / 20 uF @ 200 VDC
Check with Tom at
<http://www.hayseedhamfest.com/capkit.htm>
Note Version differences.......
73, Garey - K4OAH Glen Allen, VA
Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs
<www.k4oah.com>
GALE STEWARD wrote:
Anyone know the values of the can-type power supply caps in the
R4C? My schematic isn't the best and I can't read the values. I
believe that one dual cap is 1000uf and 3000uf. I can't decipher
the other.
TNX & 73,
Stew K3ND
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