I have original manufacturers brochures for the following:
Drake TR-7
Collins KWM-380
Collins 75A1
Collins 75A3
Collins 32V2
2 Collins SSB Amateur Equipment flyers of that era.
Misc Henry Radio (Butler, Mo) new and used price lists from the 80's
(all in new condition)
$20.00 for
I have two original and one reproduction R.L. Drake logbook. All in
excellent, unused condition. I would sell all three for $25.00 plus
shipping.
Rick Tucker
W0RT
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How about sharing those copies with others. The best way to do that is
reply to the list when you supply an answer. Please pass the information
on. Thanks.
Dick KC9UB
On 2/29/2016 4:12 PM, Tim English wrote:
*Would like to say a BIG public thank you to all who replied with
copies of
Hey Gary,
Rob Sherwood at Sherwood Engineering has both covers……
http://www.sherweng.com/ham.html#ssb http://www.sherweng.com/ham.html#ssb
Rick
W9WS
On Jun 15, 2015, at 10:04 AM, drakelist-requ...@zerobeat.net wrote:
Send Drakelist mailing list submissions to
you can always just double it up…we did it all the time back in the studio to
intensify the color…down side was you lose about one F stop of light output : )
Rick
W9WS
On Mar 16, 2015, at 11:00 AM, drakelist-requ...@zerobeat.net wrote:
Send Drakelist mailing list submissions to
I have an original R.L. Drake logbook from back in the day. Excellent, as
new condition.
Also two of the reproductions purchased from Joseph Roth in 2007.
Asking $25.00 plus few dollars for postage for all.
Rick Tucker
W0RT
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I sold the RCS 4 switches. Thank you.
Rick
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I have two Drake RCS-4 switch units and three control heads for sale. One
was originally purchased by me in the late 70's and may have a bad component in
the control head. One control head and switch checked out okay a few years ago
but I am selling all as is. I used the one I bought for
No messages for a couple of weeks so testing.
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the tubes burn up. They have become quite
expensive.
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WB6KBL
dickb...@ix.netcom.com
- Original Message -
From: choward...@aol.com
To: drakelist@zerobeat.net
Sent: Thursday, May 29, 2014 6:36 PM
Subject: [Drakelist] TR-4 Audio Hum Question
Thanks to Gary and John
Rick, W0RT, --C-Line, R4A/T4XC, MN-2700, RCS-4--testing___
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in average power and
intelligibility.
If at all possible listen to your own signal on an
independent receiver for both quality and spurious signals.
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.
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not improve things and causes the
tube to run hot.
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Haven't gotten anything for a week, is the list still
alive?
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experience in the recent past
of being blocked by a third party spam blocker and as a
result having to re-subscribe to a couple of lists using my
ARRL account so I thought I would check.
Anyway, Happy Hollidays to all and thanks for the
companionship.
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Los Angeles
WB6KBL
in Detroit and spent a lot of time in rural
Michigan. When I was a kid snow was FUN! That's because I
didn't have to shovel it. The scene below is _beautiful_ but
its about 80F here and I think I will stay. Keep those
sleet melters working.
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Los Angeles
WB6KBL
dickb
by moi and will hear anything
the R4B will. Its quite amazing but the R4B still has better
selectivity.
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you asking what had happened and got a bounce.
So, whatever happened, I am glad the list is back.
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Another test message.
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- Original Message -
From: Richard Knoppow 1oldle...@ix.netcom.com
To: drakelist@zerobeat.net
Sent: Saturday, November 30, 2013 7:22 AM
Subject: [Drakelist] Test message
Another test message.
I got a message from Thom La Costa, the owner of this
list, that messages from
A test to see if I am resubscribed.
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Welcome home Howard. Sounds like (pardon the pun) bad filter caps in your
AC4 pwr supply. I assume they’re original, so 40 plus years old, but simple
fix.
Rick
W9WS
I have just put myself on the air after a 15 year absence, I am using the
Drake TR-4 that I had in Colorado 15 years
got
oil or grease on it cleaning may increase the holding
friction a bit. Otherwise I agree about using felt washers
under the knob.
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(no pun intended) you are getting
distortion on received AM signals but not on SSB? Have you
access to an oscilloscope?
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- Original Message -
From: Bill V wviga...@cox.net
To: Richard Knoppow 1oldle...@ix.netcom.com;
drakelist@zerobeat.net
Sent: Saturday, October 19, 2013 11:22 AM
Subject: Re: [Drakelist] TR-4 AM Mode Receive Distortion...
Hi Richard,
Your facts are undistorted... and I do have
to cause trouble. Its
always worth poking at the wiring with an insulated stick
when nothing else works. I usually use a wooden chop-stick.
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Drakelist
is.
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of the box. Some of
the small speakers used in these receivers will astonish you
if put into larger, well made, boxes or even just a large
flat baffle.
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constants. Both act in exactly the same way as an
electrical transmission line or impedance matching network
does.
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.
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the entire capacitor. While you can use individual
units you can get an exact replacement from
http://www.hayseedhamfest.com/
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I'm not sure I understand what you mean, can you give a
more detailed description of what is happening.
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of the type used on the IF and
RF coils. Those are removed by squeezing the tabs on the
sides with a pliers and working them off.
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not note the ripple level but at full
current my memory is that its fairly substantial but I don't
remember exactly how much.
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with Deoxit
and a small brush. I've had this happen, don't remember
exactly which tube caused it but even just wiggling the
tubes in their sockets will sometimes fix it. The other
voodoo is working the screws to make sure they make good
chassis contact but I suspect the tubes.
--
Richard
I sold my L7 to another ham and he has sent me the following.
I see very low RF output.
Here are some numbers:
plate volts 1900
idle plate current 180ma
30 watts input RF
60 watts output to 50 ohm resistive load (dummy load)
plate current 440ma
grid current 120ma
I see little or no dip in
Very nice man cave Rich..TNX fer sharing
Rick
W9WS
On Dec 17, 2012, at 11:00 AM, drakelist-requ...@zerobeat.net wrote:
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drakelist@zerobeat.net
To subscribe or unsubscribe via the World Wide Web, visit
I agree with Al.
Rick
W0RT
- Original Message -
From: Al Parker anc...@ec.rr.com
To: Gary Taggart gtagg...@rollanet.org
Cc: drakelist@zerobeat.net
Sent: Sunday, December 02, 2012 1:54 PM
Subject: Re: [Drakelist] Thinking of buying Drake TR-4C
Hi Gary,
Sorry to so abrupt, but in a
Hi Chuck,
Never have, but why would you need/want to? What would you gain
(pardon the pun)? Not to be a naysayer, but what am I missing?
Rick
W9WS
On Nov 19, 2012, at 11:00 AM, drakelist-requ...@zerobeat.net wrote:
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capacitance on the measurement.
Evidently a lot of electronic voltmeters have them. In some
cases a manufacturer will specify the use of such a resistor
in making measurements. I think Collins does this in some
older manuals.
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Los Angeles
WB6KBL
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can't even read the
voltages or part designators.
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Ditto.
C. Richard Pumphrey
NOTICE: It is okay to print this email. Paper is a plentiful, biodegradable,
renewable, recyclable, sustainable product made from trees that provide jobs
and income for millions of Americans. Thanks to improved forest management, we
have more trees in America today
voltmeters and
scopes that to into the stratosphere are common so one need
not worry about building anything.
I will say that for high power amps a grid-dip meter
that can also work as a wavemeter/detector is helpful.
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Los Angeles
WB6KBL
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you must
disconnect it at the feed-through caps for the tubes. That
is dangerous both because its a shock hazard and because of
the danger of accidental shorting of the supply.
The handbook method is fussy but works.
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WB6KBL
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its
worth going through the entire adjustment procedure.
I think Garrey Barrell has a disc for the R4C and it
may have stage gain info, contact him about this. He is
_not_ on this list. www.k4oah.com
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WB6KBL
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with mold seams going the long way all seem to go
bad.
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at the ripple) I would
first confirm there is a signal at the side tone jack and
then trace it along the audio chain to see where its getting
lost. Since the position of the function switch (that is AM
or SSB) does not seem to affect the problem its likely after
the switch S-5.
--
Richard Knoppow
of the coils and adjust the capacitor to get
oscillation.
International Crystal seems to be a good source for
Drake crystals. They know the characteristics. If you
determine the crystals are bad I suggest calling them.
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Los Angeles
WB6KBL
dickb...@ix.netcom.com
Damien,
This should tell you everything you need to know about the AC-4.
http://www.wb4hfn.com/DRAKE/DrakeArticles/AC4_Troubleshooting/
Drake_AC3-AC4_Troubleshooting.htm
73
Rick
W9WS
On Aug 25, 2012, at 11:00 AM, drakelist-requ...@zerobeat.net wrote:
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Charles,
I just try'd it and it went right to it...try this from the main
page... it's the 1st item on the list of articles http://
www.wb4hfn.com/DRAKE/DrakeTechTips.htm
Rick
W9WS
On Aug 25, 2012, at 12:11 PM, Charles Ring wrote:
On 8/25/2012 1215, richard radke wrote:
Damien
Hey Damien,
Welcome back to radio (you even had a few fireworks too). Yup that's
what a cap sounds like when it goes. Remember, it's probably 40
years old and engineered for 25. Easy fix though. Re-build the
whole supply while your in there. You more than likely lost a couple
diodes
an open taper caused by the 5K
7 watt resistor in the power supply opening. It could be that the
taper has opened or developed a weak spot that is circumvented by
the wiper crossing that area. Just not sure about this one.
73,
Evan, K9SQG
-Original Message-
From: richard radke rar
Hi Bob,
What do you mean by doesn't work? My T-4XC with the L4B is pretty
heavy-handed. Just a slight advance of the L4B's gain control
drops the pwr output big time. Almost makes me think the pot isn't
linear. Makes it really tuff to find that sweet-spot. I typically
leave the ALC
that as well.
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. Check the switches with an ohm meter.
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In GOD we trust
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- Original Message -
From: Mike Williams mj...@bellsouth.net
To: drakelist@zerobeat.net
Sent: Sunday, August 12, 2012 9:19 AM
Subject: Re: [Drakelist] Hum in audio
Carey,
I had the same issue with my T4X; it turned out to be the
AC-4. As Richard mentioned, use a scope or have
the screws. Very often ground connections are made through
them and they become slightly corroded in the same way as
the contacts on switches do. Working them will clean the
connection and often get rid of pernicious problems.
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centering. If this is from something that has gotten
in-between the plates canned air may also get it out.
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I'm in the process of restoring a TR-4Cx. Here are my unedited 7/15/2012 notes
concerning lighting differences:
The illumination color is different for the panel frequency dials on the right
(bluish-white) and the receive signal strength transmitter plate current
meters on the left
I am looking for some guidnace on testing RF amplifier tubes. I have a couple
of 3-500Z tubes that I would like to determine if they are keepers or should be
sent on to the Great Junk Pile In The Sky.
I would much prefer to NOT put them in in my working amplifier. I'm sure
Murphy
would
When using the C-line on CW should you put the R4C on external mute and use the
sidetone or can you without damaging the RC put the function switch on ON so
you can monitor your actual cw signal. The sidetone is not pleasant. Thank you.
Rick
W0RT
,.WV9E
There is a data sheet for this mic showing the wiring
at:
http://homepage.ntlworld.com/rg4wpw/mc50.pdf
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Next step is to try some SSB transmitting! I was able to inject
carrier (am) and tune my antenna ... but my SSB output is not enough to
make the meters 'wobble'!!
Maybe I need to clean up some more terminals. Any ideas people??
Richard
VK1RJ
--
--
Eraina Richard Jenkins
Canberra
...
but I do want it stable enough for casual SSB operating.
73 to all and once again ... big THANKYOU.
Richard
VK1RJ
--
--
Eraina Richard Jenkins
Canberra
'richardirena' on skype ... if at home
Haver a MN2000 looking for a home. It is totally functional with no known
problems.
I have not installed any upgrades. The tuner has not been abused or run in a
high power environment.reading function.
$200 plus shipping, North America only. Pictures provided upon request.
Thanks
W5BXE
in the San Fernando valley. I can
ask if they are interested in making other than high end
audio tubes.
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I have only one comment to make, which may or may not be applicable. Sometimes
moderators on forums are like the Folks that are on condo boards. I have seen
this on several forums. It creates problems from the libertarian types. Free
speech should prevail. Some think the first amendment
, not the current or past ones.
Unless you have the URL it appears you can't access the
current issue. This is an odd way to set up something that
is offered free.
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also possible that the thing is way out of
alignment. If the above voodoo doesn't fix it I suggest
going through the alignment procedure.
Its normal for the side band indicator to switch with
the band. Its set up for the most commonly used sideband on
each band.
--
Richard Knoppow
to
part with? The V6 shield is for a 7 pin and the V7 is a 9
pin (wider and
taller). Mike
Shields for V6 and V7 were never supplied. I am not
sure why sockets taking shields were used perhaps because
they do provide some shielding of the base of the tube.
--
Richard Knoppow
Los Angeles
sockets with a
little deoxit and a fine brush like those sold for cleaning
between your teeth.
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Los Angeles
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Marc,
I agree with Lee. Low input voltage. Mine shows 2700 volts running
from a 240vac line after rebuild. What do you see in the cw/tune
position, lower by the same percentage?
Rick
W9WS
On Feb 20, 2012, at 11:00 AM, drakelist-requ...@zerobeat.net wrote:
Send Drakelist mailing
Dino,
I had a bleeder go several years ago when the glitch resistor blew
with a BANG! I could only tell by a hairline crack in the body
(can't remember if I did a resistance ck 1st or not). Took it out
and it promptly fell apart. Did a rebuild with one of Mike's board
and replaced
John,
I've used a Heil HC-4 element through a Hi-Z xmformer for years.
Heil sells (or used to) the raw element and transformer individually.
I mounted them in a very nice black anodized dynamic mic from RS.
Dosen't sound quite as good as my Shure 545S, but has a little more
output
Rick
I am looking to purchase an amplifier in the next 30 days. If you have a Drake
or Ten-Tec amplifier you're considering selling, drop me an email with your
price and some digital pic's.
Please don't offer me a project amp, I already have one of those and I don't
need another.
TNX W5BXE
Since he disconnects the VOX pot to accomplish this I
also wonder. I wonder about the untended concequences of
many of the mods for Drake stuff especially those for
improving the audio.
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Los Angeles
WB6KBL
dickb...@ix.netcom.com
far fetched but easy enough to do and worth a
try. If cleaning makes a difference but does not cure the
problem a new socket might be in order.
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Richard Knoppow
Los Angeles
WB6KBL
dickb...@ix.netcom.com
- Original Message -
From: Randy WB4SPB wb4...@earthlink.net
To: drakelist
and a
toothpick, wiping
away any excess with qtips. Mike.
I use paint pens. They come in several colors and tip
widths. I got mine from a local art supply store. Mine were
made by the same people who make Sharpie marker pens. These
are filled with enamel paint.
--
Richard Knoppow
Los
efficiency is partly a matter of the
pulse duration. I think if you want a transmitter primarily
for CW or FSK building one from scratch might be best.
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Los Angeles
WB6KBL
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. If the crystal is bad new ones can be
had from International Crystal or Bry Carling.
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are the result of operating without a load although
that will raise them somewhat. However, it would not change
the bias voltage.
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- Original Message -
From: Rick Gunderman wa4rg.r...@gmail.com
To: Richard Knoppow 1oldle...@ix.netcom.com
Cc: drakelist@zerobeat.net
Sent: Sunday, January 15, 2012 9:56 AM
Subject: Re: [Drakelist] AC-4 Voltages
Thank you for your response Richard. Using the same meter,
my line
be
a measurement error. The voltages that count are those
measured with the transmitter working.
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and a flat mic like
an old Electro-Voice 654-A. The amount of difference
surprized me because of the narrowness of the pass band.
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WB6KBL
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modulation percentage is not as
straight forward as for a conventional transmitter.
If one wants real AM its better to get or build a
dedicated transmitter but Drake makes it possible to
communicate with those who may not have SSB receivers (who
would that be?).
--
Richard Knoppow
Los
All,
Thanks to everyone who made suggestions. Solder on the pins all look
ok. .5Ω's on each filament. I'm guessing a grid to filament short/
leak when it gets hot. I did notice a slight bit of clouding near
the top of the envelope that wasn't there before. Maybe from running
the
I have an unusual situation underway in my L4B. Evan, you out
there? Been working fine until yesterday (i know, well happy new
year) one of the 3-400's filaments is half as bright as the other. I
reversed the tubes and the same tube was dimmer in the opposite
hole, and the amp and
for closed auctions.
There is also a Morse Code list where you might get
some help. I have no idea of the value of this thing.
http://mailman.qth.net/mailman/listinfo/morsecode
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Richard Knoppow
Los Angeles
WB6KBL
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overheating but have never had a suck-out.
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Los Angeles
WB6KBL
dickb...@ix.netcom.com
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Butt ugly would be a compliment.
73 W5BXE
Date: Wed, 21 Dec 2011 07:46:21 -0500 (GMT-05:00)
From: Steve Wedge w1es1...@earthlink.net
To: drakelist@zerobeat.net drakelist@zerobeat.net
Subject: [Drakelist] Nastiest Drake Gear
Message-ID:
or even blue.
--
Richard Knoppow
Los Angeles
WB6KBL
dickb...@ix.netcom.com
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other
than serious fungus (that stuff went to the factory and I
don't know what they did with it).
--
Richard Knoppow
Los Angeles
WB6KBL
dickb...@ix.netcom.com
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compensation results in drift that varies in
direction as the temp changes.
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Richard Knoppow
Los Angeles
WB6KBL
dickb...@ix.netcom.com
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be more important than the wattage. Modern irons have very
little mass so are cooled quickly, for working on old
equipment one needs a high mass iron.
--
Richard Knoppow
Los Angeles
WB6KBL
dickb...@ix.netcom.com
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manufactured, not
re-stuffed old cans. They are exactly right. He makes caps
for Drake, Hallicrafters and other classic equipment.
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Richard Knoppow
Los Angeles
WB6KBL
dickb...@ix.netcom.com
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I've used John Kriner and Ron. Both did an excellant job (John went over a
T4B/R4B, Ron went over my TR7).
Message: 3
Date: Sat, 22 Oct 2011 22:50:17 -0400 (EDT)
From: K9sqg k9...@aol.com
To: dwrigh...@neb.rr.com, drakelist@zerobeat.net
Subject: Re: [Drakelist] Drake Service?
Message-ID:
replacements locally. Keeping a spare
available is a good idea even though they are likely to last
forever. If the TR-4 receiver seems dead and its nothing
else the lamp is worth looking at. If its open or the
contacts are dirty the effect is of no antenna being
connected.
--
Richard Knoppow
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