#2 is still in its pristine, late-1960's state. I just bought it with a
very nice-but-dusty T-4X and MS-4 and AC-4 from Shelby. I have shut if down
for now, though, as I've noticed significant AC hum on the signals. Once I
get my PTO back, I'll run my R-4A with the revitalized PTO whilst I begin
work on R-4B #2. This will include re-capping all electrolytics.
My take is that this set I bought at Shelby represents what a lot of hams
with Drakes had during that period: The receiver was enough of a progression
from the R-4A to be worth upgrading, but the transmitter wasn't really
different enough to warrant dumping the T-4X for a T-4XB. From what I've
seen, the major difference is the neon dial indicator.
Steve Wedge, W1ES/4
To be is to do - Socrates
To do is to be - Plato
Do be do be do. - Sinatra
All my computers have my signature with various pearls of wisdom appended
thereto.
--------------------------------------------------
From: "Garey Barrell" <[email protected]>
Sent: Friday, September 23, 2011 6:13 PM
To: "Steve Wedge" <[email protected]>
Cc: "Drake List" <[email protected]>
Subject: Re: [Drakelist] Anyone ever look inside the PBT box?
Steve -
What did you do to the PTO in R-4B #2? I thought they were both jumpy?
I would use just about any small coax you have for the injection. It's
not long enough to matter what impedance or loss (within reason!) it is.
The headphone jack on the R-4A was in that location, and the panel still
has the locator mark in the "B" location, and of course the main chassis
has the cut-out needed. Drake probably had enough 'complaints' about the
front panel location interfering with access to the RF GAIN and the SSB/CW
switch. I didn't complain, but the PHONE plug body sticking out there
made it very difficult to switch the SSB/CW switch.
So now we have to deal with the silly little flat plugs!
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Steve Wedge wrote:
Now I'm home (and listening to R-4B #2, which is going to need to be
re-capped but is otherwise working in a sterling manner) and checked out
the info on the PBT assembly. It sounds pretty simple once the cover is
removed.
I'm now at the point with R-4B #1 where I feel that I owe it to the rig
to put it back - more or less - to the way Bob Drake intended it to be.
That means I'll need to re-route a new Injection cable inside the rig, as
the PO shortened it when he moved it over to the SPARE location (WHY he
did this, I will never know, and it's my understanding that he's an SK).
The audio mods I'll probably leave in, as the rig sounds nice and rich,
but that variable AGC delay is seriously messing up the ability to
control RF gain. I think I'll put a headphone jack where that extra
goofy knob is as I have seen more than a couple of B's that have had this
change (in all honesty, moving the headphone jack to the side wasn't a
great move...)
Question here is this: what can I use for the internal cable in the R-4B
to go from the pre-mixer to the INJ jack? I will have to replace this
since the PO shortened it :-(
Steve Wedge, W1ES/4
To be is to do - Socrates
To do is to be - Plato
Do be do be do. - Sinatra
All my computers have my signature with various pearls of wisdom appended
thereto.
--------------------------------------------------
From: "Chris Kepus" <[email protected]>
Sent: Friday, September 23, 2011 11:25 AM
To: <[email protected]>; "'Steve Wedge'" <[email protected]>
Cc: <[email protected]>
Subject: RE: [Drakelist] Anyone ever look inside the PBT box?
ROTHFLMAO!!! Made my day reading your softly worded post, Garey! Had to
clean up some coffee that squirted out, though. RTFCD and derivatives;
i.e., RTFIM, RTFD, etc., are most fun play words. :-))))
73,
Chris
W7JPG
"As some have said, 'RTFCD!!' :-)
73, Garey - K4OAH
Glen Allen, VA"
_______________________________________________
Drakelist mailing list
[email protected]
http://mailman.zerobeat.net/mailman/listinfo/drakelist
