Best Wishes to All for Christmas at the end of this amazing year. Thank you
too to all on the Drake List who helped me so often . You are the best
thing ever happened to me on the Internet!
John. GI3KDR
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Hello. Merry Xmas to all of you.
Still need some help on my 2-B that still on the bench.
I have calibrated the S-Meter using the manual instructions. The radio was
turned on for a long time BTW. The process was straightforward. Too bad
that even a 15Mohm voltmeter shunts the AVC line. The
Drakelist members,
I don't post much but read and profit from everything. The talent on this list
and civility with which things are done are truly a blessing. Merry Christmas
to all and thank you.
Rick Tucker
W0RT
Drake C-line
R4B/T4XC
R4A/DX-60B/HG-10B (40
Thanks to some very nice guys on this list, who have been helpful to me, I have
determined that I have a WEIRD Drake TR 3.
My TR 3 is Serial # 6564 and since there were various versions, I now know that
the two boards between tube sockets V 18 and V 19 and the audio transformer are
wired
This is for reference:
I am working on restoring a stripped TR-4C. One thing wrong with it is the
filter cap needs replacing (the 4 section can electrolytic in my case. I
think earlier ones had a 3 section can electrolytic). My can electrolytic
is definately bad. That resistor you are
My TR 3 has been converted to the plug in type relay. Can anyone tell me the
manufacturer of the relay, its' part number, where I can get it and the price?
Thanks and 73, John, K5PGW
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The relay used in some Drakes rigs including some TR-4s and the TR-4C is
Mouser Part Nbr 655-R10-E1Y4-V2.5KIt is a Potter Brumfield
R10-E1Y4-V2.5K I bought one a few days ago and it cost $16.68. This is a
2.5K relay. Some Drakes used a 15K relay but they can be interchanged if a
Dennis, merry xmas to you and yours, firts of all.
Thanks for the input. I don not know if I my explanation was clear
enough. The long S-meter journey to S1 just occurs after power the
unit up and for 10 or so minutes. After that the behaivor is normal.
Yes my first shot was a opened path
Thanks Dennis. I will check that.
On Thu, 25 Dec 2008 22:18:34 -0200, Dennis Monticelli
dennis.montice...@gmail.com wrote:
Well, there still may be a thermal effect. It is hard to imagine a
time constant of several minutes that is due to a capacitor, while a
component or sub-assembly will
hi gang and merry christmas
does the t-4x have the splatter paint job or a smooth paint on the case?
Carey Lockhart, KC5GTT
kc5...@gmail.com
www.kc5gtt.com
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Chuck,
thats strange. i wonder why they did that? the r-4a i have is
textured. is yours?
Carey Lockhart, KC5GTT
kc5...@gmail.com
www.kc5gtt.com
On Dec 25, 2008, at 7:03 PM, Chuck Grandgent wrote:
seems pretty smooth on the two that I have.
Chuck, K1OM
On Thu, Dec 25, 2008 at 7:57
Smooth. The Polane paint jobs came later, I think it started with the C
line.
Lee, w0vt
- Original Message -
From: Carey Lockhart
To: drakelist@zerobeat.net
Sent: Thursday, December 25, 2008 6:57 PM
Subject: [Drakelist] t4x case type
hi gang and merry christmas
does the
My R-4A, T-4X and MS-4 are not textured. I bought them new and still have
them. BTW, for my $, the R-4A is the best sounding receiver of the entire line.
Merry Christmas and 73,
John, W4AWM
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well i think i will go with the smooth since thats what it is. i can
always repaint later. my b line has textured paint but my older tr-4
does not. thanks for the help guys
Carey Lockhart, KC5GTT
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My early R4B is textured.
On Thu, Dec 25, 2008 at 5:46 PM, Carey Lockhart kc5...@gmail.com wrote:
well i think i will go with the smooth since thats what it is. i can always
repaint later. my b line has textured paint but my older tr-4 does not.
thanks for the help guys
Carey Lockhart,
I have yet another wild idea. I don't have a schematic in front of me
so I don't know if there is a buffer between the high Z node and the
AVC line that feeds the grids. If there is no buffer, then perhaps
one of the gain controlled tubes has a grid emission problem that is
charging up the AVC
John -
I got home a little earlier than I expected
Your TR-3 is not weird, just early.
That resistor is indeed R111, and is 3.3k / 1/2W. It is between the
+250V bus and the +245V bus. The +245V bus is a decoupled supply for
V16 and V18, the low level Audio stages. About the only thing
Fred -
I have been traveling and missed some of this thread. Try subbing tubes
in the AVC stages. Often an IF tube will be gassy, and the grid will
lose control after 5-20 minutes of warmup. The 12BA6 is particularly
susceptible to this problem, even in New Old Stock tubes. You
sometimes
Carey -
In my experience, Drake started using a spatter finish on the version
3 of the R-4A, which was well into the T-4X production. Early T-4X were
indeed smooth satin black finish, as were the R-4 and R-4A version 1
and 2. The spatter finish went through the R-4B and then the textured
John -
Drake sold a conversion kit for the TR series and the pre-C Line T-4X
transmitters. The early C-Line used a British made (Valpey) plug-in
relay that had a 15k coil impedance, and the wire was so fine that is
was either breaking from corrosion at the solder tabs or mechanical
stress
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