I had the same problem with a T4XB awhile back. The problem was a dirty wiper
of the XTALS switch. Cleaned with DEOXIT and all was well.
73, Stew K3ND
From: Steve Wedge
To: Peter Ravn ; Drakelist@zerobeat.net
Sent: Monday, August 26, 2013 10:36 AM
Subject
Since my B-line has been operational, I started on refurbing the C-line,
starting with the T4XC & AC-4. I installed another of Paul's upgrade kits in
the AC-4. Cleaned up the T4XC and looked everything over.
When I fired up the T4XC on the bench (separate, no rcvr), thru my Bird 43 and
my 2
e
of high line voltage which in turn leads to high filament voltage which in turn
leads to lower tube life.
Enjoy those Drakes.
73,
Evan, K9SQG
-Original Message-----
From: GALE STEWARD
To: DrakeRadio
Sent: Fri, May 24, 2013 10:32 pm
Subject: Re: [DrakeRadio] Re: What is the differences
I picked my first B-line yesterday from it's original owner. Was very dusty but
otherwise in fine condition.
In checking out the R4B I found a charred resistor. I ordered Garey's B-line CD
but haven't received it yet and this resistor was cooked and I couldn't get the
resistance value. This res
I have suspected for a number of years that the plate meter in my L4 was
reading a bit low. Today I had the amp opened up to make a minor repair and I
decided to check. Using a variable power supply, a series resistor, and a DMM
in series, I've determined that the L4 meter does indeed read a bit
Try this link. I purchased a few different colors of the 44/47 retro LEDs.
http://shop.cointaker.com/category.sc;jsessionid=BF7354FAC3C32E53952C9DF7F0BE257B.qscstrfrnt05?categoryId=150
Subject: Re: [DrakeRadio] led bulb replacement
I've used some of the LED replacements from this ou
I recently picked up an L4B that needs some work. For some reason, a previous
owner had removed the 6:1 vernier on the plate tuning cap.
Needless to say, I'm looking for one to re-install on the plate tuning control.
I do have the red pointer so all I need is the vernier.
Anyone out there in Dr
I remember some discussion about this in the past but can't find the link.
Is anyone presently make replacement front panels?
I might need one for an L4B.
73, Stew K3ND
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A timely question about the L4/L7 bleeder resistors. I recently had an issue
with one of my L4PS supplies. It turned out to be a bad cap which I replaced.
I'm going to install a Heathkit Shop board eventually but I wanted to get the
amp back on line for use in the ARRL CW DX contest. While the s
While I don't use my L4 on AM, I do use it for contesting. I use two muffin
fans sitting on the top of the cabinet, one directly over each tube. These are
the lower speed fans so they are fairly quiet but they still do a great job of
providing additional cooling. They are positioned to blow the
Got mine in 1963. I had three crystals for 40M and two for 80M. My buddies and
I
used to "swap" xtals periodically so we could operate "new" frequencies.
The best part of getting the General license was being able to then use a VFO.
That was a GREAT motivator!
73, Stew K3ND (ex KN3ZOL)
-
I have them in a C-line and also an L-4. While I like the look, I can see how
some don't as the radios definitely don't look "stock".
73, Stew K3ND
From: Robert Ladden
To: Drake List
Sent: Fri, December 3, 2010 5:03:22 PM
Subject: Re: [Drakelist] Blue LE
I have the blue LEDs in my C-line and L-4. I like the look but I admit that
they don't look "stock" and can understand why some don't like the LEDs.
YMMV
Stew K3ND
--- On Tue, 10/19/10, geoffrey mendelson wrote:
> From: geoffrey mendelson
> Subject: Re: [Drakelist] Blue Filters for B and C
Awhile back someone was looking for the L4PS HV power supply for the L4/L4B...
Here's a link to one on Ebay. FYI, this is NOT my auction or anyone I know.
Strictly a "public service".
http://cgi.ebay.com/DRAKE-L-4-AMPLIFIER-TRANSFORMER-/270624877049?pt=LH_DefaultDomain_0
73, Stew K3ND
-
A couple of other things to consider. In the R4C - if you upgrade to the
Sherwood audio amp and product detector, you can unplug two tubes (less
filament current). My rcvr also has the blue LED dial lamps which saves a bit
more. I still run a small 12V fan that sits on top of the rcvr. a little
I've been very happy with the look of the equipment after removing the blue
plastic entirely and replacing the bulbs with blue LEDs.
http://www.radiolabworks.com/products/4linelamps/4linelamp.html
I have them in my R4C, T4XC, and L4.
A satisfied user!
Stew K3ND
The L4 and L4B work also work fine on 12 & 17M. I have one of each and do it
all the time!
73, Stew K3ND
--- On Mon, 9/14/09, Richard J. Fiero II W5TFW wrote:
> From: Richard J. Fiero II W5TFW
> Subject: [Drakelist] using the Twins on the WARC bands
> To: drakelist@zerobeat.net
> Date: Mon
I think someone on here was looking for an L4B power supply a few days ago.
http://cgi.ebay.com/DRAKE-L-4PS-POWER-SUPPLY-L-4-L-4B-L7-LINEAR-AMPLIFIER_W0QQitemZ180400555945QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2a00b607a9&_trksid=p3286.c0.m14
Yeah, cut a big square hole in the dash and mount that baby right in there!
Amazing!!!
73, Stew K3ND
--- On Wed, 6/24/09, Chuck Grandgent wrote:
> From: Chuck Grandgent
> Subject: [Drakelist] Great R4B questions
> To: "drake"
> Date: Wednesday, June 24, 2009, 4:17 PM
> There's an R4B curre
Anyone know what IC is used in the MIX-4 (Sherwood R4C third mixer)? I'd like
to get the part number so I can download a data sheet.
73, Stew K3ND
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Does anyone have a source for the filament voltage feedthru caps (C25 & C26)
for the L4B? These are the can-type feedthru caps that supply filament voltage
into the under-chassis RF compartment, near the tuber sockets.
Any info appreciated!
73, Stew K3ND
_
I've located a AGC switch that is NOS for the TR5. Does anyone know if this is
the same type wafer switch used in the R4C? (My R4C has a cracked wafer)
I don't have a TR5 schematic to check. The TR5 front panel shows the same four
positions as the R4C but don't know about the actual switch confi
I'm presently reconditioning an R4C. I noticed that the wafer of the AGC
switched is broken. The previous owner apparently was a "hacker" as some other
things in the receiver were pretty shoddy. Anyway, I like to replace this
switch.
Anyone have one or could suggest a source?
73, Stew K3ND
I recently acquired a C-line in very good condition. I never had one "in the
day" and always wanted one. Before the purchase, I asked my friend if the R4C
was the later model (5 position mode switch) and he told me it was. As I picked
up the radios, I noticed that the R4C was the earlier model
Here's one I had bookmarked...
http://www.wb4hfn.com/DRAKE/DrakeArticles/TechTips/CabinetRepainting.htm
73, Stew K3ND
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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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