the diode to open.
It happened to one of my T-4XCs. I replaced the B5G5 diode with a 1N4003 (or
1N4007).
73 ES GL,Bob K9JUMaryville, TN
On Saturday, February 2, 2019, 12:00:16 PM EST,
drakelist-requ...@zerobeat.net wrote:
Send Drakelist mailing list submissions to
drakelist
Brett, there is probably nothing wrong with the rig. In all likelihood, you
have inadvertently tuned to the carrier oscillator at 5.645-MHz. Try again with
the RX Preselector and the TX RF Tune in the 40M marks on the front panel.
73,Bob K9JU
On Saturday, October 14, 2017 12:00 PM
sources from which I could purchase
transistors, capacitors, etc in the one or two quantity level for these
older radios?
73's
Bob Burkett K5DCZ
mathisfun@gmail.com
972-839-9652
*I would rather have questions that can't be answered than answers that
can't be questioned
26, at 8PM Eastern Time.
I thank you for allowing me to share this information.
73, Bob / dew...@gmail.com
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George, the ball bearings are 1/8 diameter and it takes 10 in the race. Here
is a McMaster-Carr link from WA6FWI:
http://www.mcmaster.com/#9291k43/=x0zm8t
Bob K9JU
On Friday, May 22, 2015 11:00 AM, drakelist-requ...@zerobeat.net
drakelist-requ...@zerobeat.net wrote:
Send
for the ALS-600 amplifier. He changed to
the Omron relay from the Panasonic due to faster switching speed. My first pass
used the Panasonic. It was noisier than the Omron but not near the racket of
the Drake relay.
73,
Bob Loving K9JU
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I understood she didn't use any TR switch. This is from 1962.
http://www.wb4hfn.com/DRAKE/DrakeAds/Drake_QST_0462.htm
Bob W5GU
On 2/14/14 2:22 PM, lane denune wrote:
Hi Drakelist Gang ; Got a really sweet 2B receiver from a Drake List
contributor a couple of weeks ago. What a great little
Hi, Lee:
Have you seen the February 2005 QST article in Hints Kinks (pp 72-73) about a
replacement for the R-4B dial? If not and you are an ARRL member, you can find
it in the archives at the ARRL website.
73,
Bob K9JU
(Snowy and cold) Streamwood, IL
discreet cap) for about $30. The URL is
http://hayseedhamfest.com/cartlist.html?cat=5.
GL ES 73
Bob K9JU
From: drakelist-requ...@zerobeat.net drakelist-requ...@zerobeat.net
To: drakelist@zerobeat.net
Sent: Tuesday, November 19, 2013 11:00 AM
Subject: Drakelist
confirmed address.
Thank you and 73
Bob VE3UK
(248) 247-5937
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Evan, what thickness of the acoustic foam did you use? Is it placed directly in
back of the speaker but not touching? Is the foam available at RadioShack and
the like? Thank you.
Bob k9JU
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http
of the window in this link:
http://www.surplussales.com/Microphones-Audio/MicroAudio-8.html
73,
Bob K9JU
--- On Mon, 4/15/13, drakelist-requ...@zerobeat.net
drakelist-requ...@zerobeat.net wrote:
From: drakelist-requ...@zerobeat.net drakelist-requ...@zerobeat.net
Subject: Drakelist Digest, Vol 58, Issue 16
Seems to be closed indefinitely...
Vy 73, Bob DJ0RD/WU5T
Message: 3
Date: Sun, 17 Feb 2013 06:46:22 -0500
From: Robert Look w8...@comcast.net
To: drakelist@zerobeat.net
Subject: [Drakelist] Amp Keyer Interface
Message-ID: 5B5890311E7D4F259883D128C58BDE8C@winpro757b2579
Content-Type: text/plain
Lane,
His call sign is WA8SAJ.
73,
Bob AD3K
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of lane denune
Sent: Monday, December 17, 2012 12:46 PM
To: drakelist@zerobeat.net
Subject: [Drakelist] Call Sign.
What's Jeff Covelli's call sign
Hi, all:
I should do a better job of proofreading before pressing the Send button! The
summary of the changes should have referenced R135 (not R133) in the both cases.
I apologize if there was any confusion.
73,
Bob K9JU
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, had R135 = 68k and the tube was a 6EV7.
Changing the resistor to 68k for a 6EV7 provided the correct VOX dropout delay
time.
To summarize: R133 = 33k for 6FQ7/6CG7
R135 = 68k for 6EV7
Good luck.
73,
Bob K9JU
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Well.go ahead.
On Nov 24, 2012, at 6:46 AM, Ariel M. Elam k4...@comcast.net wrote:
I must reiterate Evan's words. 73, Ariel, k4aal
On 11/22/2012 9:58 AM, K9sqg wrote:
Fellow Drake Enthusiasts,
I'd like to take this opportunity to wish everybody a Happy Thanksgiving!
Though
To all who received a bogus email, including this list, my apology. My email
address list was hacked. That's the last time I will open any email in the spam
folder regardless of how legit it looks. A word to the wise is sufficient.
73,
Bob K9JU
Bill,
Are the levels what they ought to be through the signal chain? A poor solder
joint that reduced normal signal levels could cause the relative strength of
leakage to rise.
Another possibility is that someone fixed something and the receiver is
now miswired.
73,
AD3K
From:
Bob DJ0RD/WU5T
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...@frontier.com]
Sent: 13 August 2012 19:39
To: Bob DeHaney
Subject: Re: [Drakelist] Drake 2B Restoration
Bob,
By the way his call is WB4HFN. Maybe that is why you can't email him?? I
can't help you on the PL-50. I have a 2B/2BQ and the existing connection is
a four wire type connector. The Q
I need the rear panel Q-Multiplier Cinch connector (a genius replaced mine
with an SO-239). Anyone have a donor 2B or R4 who could sell me the
connector?
Vy 73 de Bob DJ0RD/WU5T
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http
Has anyone on the list ever seen the original selling price (MSRP) for the RV75
Remote VFO? None of the price lists at WB4HFN's website shows the item.
Just curious and want to compare MSRP with what ePay sellers are getting for
the very rare units.
73,
Bob K9JU
Bill, one of my 'R-4Cs had a noisy IF amplifier, V5, which is also a 6BA6 like
the RFA.
73, Bob K9JU
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in!
You could also remove the relay and use clip leads to make the various
connections to the contacts and the coil of the relay.
73,
Bob K9JU
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of the input transistor to
the source connection of the output transistor of the cascode stage as
short as possible. If you use the resistor de-Q-er, put it in series
with the drain lead from the output transistor of the cascode stage.
73 ES GL
Bob K9JU
to put a 10 to 22 Ohm resistor in series with the drain to
de-Q the circuit at VHF and above. A small ferrite bead on the drain lead
will accomplish the same thing.
73,
Bob K9JU
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http
., in this case a RCA SK Series Replacement book.
73,
Bob K9JU
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I too wish to obtain a new L4B front panel. Tnx, 73, Bob, W3QJ
- Original Message -
From: GALE STEWARD
To: Drake Reflector
Sent: Monday, March 12, 2012 2:16 PM
Subject: [Drakelist] Drake Front Panels
I remember some discussion about this in the past but can't find
Add in SBCGLOBAL (ATT) and/or Yahoo Mail!
Bob K9JU
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Mark,
Yes. It is vitally important that the fuse be in the hot lead of the cord
which should be connected to the _inside_ end of the fuse holder so that
when the fuse is pulled part way out with the outside end exposed, the fuse
is not hot.
73,
Bob AD3K
From: drakelist-boun
Does she clean, cook and do dishes and warm up the Amp? , Ill take the Drake
Mom! 73, W3QJ
- Original Message -
From: gypsym...@aol.com
To: n...@juno.com ; drakelist@zerobeat.net
Sent: Saturday, January 14, 2012 3:16 PM
Subject: Re: [Drakelist] drake gear for sale
You
of differing opinions
would be beneficial.
73,
Bob. K6GGO
Sent from my iPad
On Jan 3, 2012, at 6:14 AM, Gary Poland gpola...@cinci.rr.com wrote:
Ok, one last comment and I’ll shut up. Regardless of how you feel about
the Sherwood mods my point is, for me anyway, its not practical because
Thanks Joe,
Mouser has them for a buck and a half. That's more like it.
Bob K6GGO
Sent from my iPad
On Dec 20, 2011, at 4:15 PM, Joe Pyles epy...@indy.rr.com wrote:
again,
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http
12Vdc fan would probably work and you can find the 80-mm fans in
abundance from the computer stores. If you want a higher speed from the fan,
add an electrolytic capacitor the output of the rectifier to increase the
average dc voltage.
73,
Bob K9JU
filter. Inrad's p/n is 2611.1; you can get
full spec's at their website (www.inrad.net). This filter is vastly superior
to the 8.0-kHz wide 4-pole design of the original R-4C roofing filter.
73,
Bob K9JU
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of stereo headsets available at very
reasonable prices in the market.
73,
Bob K9JU
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Hi Steve and Pete, I too have one of these R4B modified receivers. I really
appreciate your correspondence in sharing the findings. I have not yet had the
time to dig into it. Looking forward to the final resolution. Thanks so much.
Be in touch, 73, Bob, W3QJ
- Original Message
Drake
radios operational and you won't be without a rig if the new one fails.
73,
Bob AD3K
-Original Message-
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Ron
Sent: Monday, October 31, 2011 6:46 PM
To: drakelist@zerobeat.net
Subject: [Drakelist
is a
necessary tool for RoHS compliant work. But I wouldn't want to try to work
on my TR7A without an ESD soldering iron either. For tube gear it isn't a
problem.
73,
Bob AD3K
-Original Message-
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Paul
draw, but
it shouldn't go out. You could have some dry or leaky electrolytic
capacitors and/or some resistors that have changed value.
73,
Bob AD3K
-Original Message-
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Paul Gerhardt
Sent: Tuesday
will decrease too rapidly to do the job.
73,
Bob AD3K
-Original Message-
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Richard Knoppow
Sent: Tuesday, October 25, 2011 3:10 PM
To: Paul Christensen; Drakelist@zerobeat.net
Subject: Re: [Drakelist] T4XB
PIN diodes used in the TR-7
series.
73 Bob W7AVK
On 10/16/2011 8:28 AM, Garey Barrell wrote:
As others have said, it's a protective 'fuse' for the receiver in the
TR-3/4 series transceivers.
It's a worthwhile addition because again, the TR-3/4 series is an
EXCELLENT 'SSB Transceiver
List - My memory misfired. The TR-7 Receiver Protector was the RP-700
not the RP-7. http://www.dproducts.be/drake_Museum/nouvelle6.htm
Over the years of Drake ham production. Some kind of Receiver
Protection was model dependent.
73 Bob W7AVK
On 10/16/2011 9:25 AM, Kihwal Lee
Bob,
I would be concerned that the heat would clear the fuse element, or at least
make it more prone to clearing at reduced current.
73,
Bob AD3K
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Robert Fish
Sent: Thursday, October 13, 2011 2:01
. This was on a radio S/N
6129 and was done 2009/10/27. The radio is still operating properly as far as I
can determine (no realignment since but no measurement of the oscillator
frequency either).
73,
Bob K9JU
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Bob,
Use a filament transformer with a secondary current rating equal to the full
load current of the TR-4C as an autotransformer to raise the voltage. If you
can find a single transformer with two five volt windings, you can use them
in series to get 10 volts, or you could use two five volt
are in the Express PCB format (free from the company and easy
and intuitive to use).
73,
Bob K9JU
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I have a homebrewed RV-7 substitute that I just tried on 40M CW. There is no
change in the displayed frequency on the TR-7 if the RV-7 is in control. If I
use it for only TX or only for RX, the displayed frequencies are as expected
without any jumpy error.
Bob K9JU
for the same band but different resonances didn't make a lot of economic
sense.
In any case, as Garey implies, each crystal has two resonances and the circuit
defines in which mode it will operate.
73,
Bob K9JU
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Drakelist
this
discoloration been noted on other 4-lines by others? How about the 7-line? I
have two TR-7s and they have no discoloration.
Bob K9JU
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good, it is worth it. Has anyone gone this route to
a replacement for the Drake unit? How does it sound and perform?
Thank you in advance.
73,
Bob K9JU
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Eddy,
I don't think aluminum foil makes good gasketing material for two reasons.
At least in this country, the shiny side of the foil is coated with Mylar
which is nonconducting. In addition, aluminum oxide is an insulator as well.
73,
Bob AD3K
-Original Message-
From: drakelist-boun
has a sidetone,
but I've never owned Drake separates, so I have no experience using them for
CW.
73,
Bob AD3K
-Original Message-
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Darrell Bellerive
Sent: Friday, June 17, 2011 3:16 PM
To: drakelist
-Original Message-
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of kc9...@aol.com
Sent: Saturday, June 18, 2011 8:36 AM
To: john.hud...@calema.ca.gov; drbellerive.va...@gmail.com;
drakelist@zerobeat.net
Subject: Re: [Drakelist] First Rigs - If
modification that I
installed. It was stable, the final amp was rugged, the AGC worked great,
and the QSK was unparalleled at the time. It was great for both CW and SSB.
I'd probably still be using it if it had covered the WARC bands, but it
predated them.
73,
Bob AD3K
-Original Message-
From
I have a friend that has had Ten Tec equipment since
the 1970s and I would agree completely with Garey's "word in the
Ham community". Every one of his rigs has spent a lot of ground
time (truck time) going to Tennessee and back. It's
also true about the
Something strange here. On band 3.5 XMTR gain at 9
o'clock...in tune position It shows .3 amp in SEPARATE position,
.3 amp in RCVR position, but only .2 amp in XMTR position. RF Tune
is peaked on XMTR and Preselector is peaked on RCVR. What am I
missing here?
cables.
Bob W5GU
On 5/27/11 12:23 PM, Garey Barrell wrote:
Bob
-
Sounds like a non-problem to me. First off, 'typical' GAIN
setting in TUNE is 10 - 11 O'clock where the ALC takes control, so
you're 'starving' one or more
trying to apply
power. Although it's been a year, there's no guarantee that all the water is
out.
73,
Bob AD3K
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Jerry Semones
Sent: Sunday, May 15, 2011 10:04 PM
To: drakelist@zerobeat.net
Subject
I've lost the info on how to temp suspend getting emails from the list. Can
someone please remind me?
Bob AG5X
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The information I found on the TR-M says that it has transmitting gain
control. It may be possible to apply a DC voltage to that to keep the output
power down to 50 Watts for 60 Meters.
73,
Bob AD3K
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf
I qualified for my Novice ticket in the 70s after VFOs were allowed. When I
subsequently passed my Advanced Class exam, I was amazed - all that space!
73, Bob AD3K
-Original Message-
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of GALE STEWARD
Michael,
If you want the most versatility, my suggestion would be to look at the
SteppIR vertical antennas. They are continuously tunable and will work all
the way to 6 Meters. The big one covers 40 meters, and there is a loading
coil that can be used for 80.
73,
Bob AD3K
From
I'm still looking for one. Reply b...@nofrowns.net.
Tnx 73 to all,
Bob AG5X
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I'm still looking for and ORIGINAL one. I can DIY one using the circuit board
picture in the manual, but would rather not. Any help appreciated.
Bob AG5X
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I did the same thing back when with a couple of 6.3 VAC 1A filament
transformers. Worked great!
Bob AG5X
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In some corners, they're also called autotransformers. My 5A one has served
me
well for anything I've ever tackled or will tackle. I keep the variac plugged
into it.
Bob AG5X
From: Nigel Gunn G8IFF/W8IFF ni...@ngunn.net
Cc: Drake Forum drakelist
My bad. Don't know what I was thinking. Must be the Tylonol III's I'm taking.
Apologies.
Bob AG5X
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Land Air has been on vacation. They got back on 1/28 or 29. Probably are just
behind and still catching up. Even when they are there it takes 2-3 days to get
a response.
Bob AG5X
From: T Poe wyatt@gmail.com
To: k4...@mindspring.com
Cc: drakelist
My gmail messages show up
in Thunderbird. But
I had 11 messages that
showed as unread that I couldn't find. I finally found them on
the gmail account showing them as Drakelist messages and saw
they were spam. But I still show 11 messages unread in
When ordering Drake crystals from I'ntl, do I give them the band freq or the
crystal freq that I want?
Tnx,
Bob AG5X___
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have the stickers and am ordering the new crystals. I understand the slots on
the crystal bank, etc.
Thanks,
Bob AG5X___
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eye.
Bob AG5X
===
This Message was undeliverable due to the following reason:
Each of the following recipients was rejected by a remote mail server.
The reasons given by the server are included to help you determine why
each recipient was rejected.
Recipient
James Barrie and all:
I've used Kroil and SiliKroil in the past and it does wonders on frozen bolts,
etc. I never thought of using it on a rusty chassis but if it works as well on
a chassis as it does on bolts, it's a winner.
There is one point with purchasing any porduct from Kano Labs.
Does the SPR-4 take the same crystals as the SW-4?
Tnx,
Bob___
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Test - If anyone sees this, please reply off list. I'm having problems with
making postings.
73,
Bob AG5X___
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variation. There are usually a number of them for sale on places like eBay.
73,
Bob AD3K
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Diane and Edward Swynar
Sent: Thursday, December 30, 2010 1:11 PM
To: drakelist@zerobeat.net
Subject: [Drakelist
on this listserv would
like to know about him.
Again, 73 and thanks,
Bob AG5X___
Drakelist mailing list
Drakelist@zerobeat.net
http://mailman.zerobeat.net/mailman/listinfo/drakelist
. Does anyone
here recall that person's name information?
73 and HNY to all,
Bob AG5X___
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Hi Lee,
You mentioned, tonight about every 10-15 minutes. Does this only occur at
night? If so and you have any street lamps containing HPS (High Pressure
Lamps) cycling that could be a possibility to check out.
Bob, K1NOK
- Original Message -
From: kc9...@aol.com
What's the general opinion of the replacement pilot lights that are actually
blue LEDs?
Bob AG5X___
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Happy Thanksgiving to the
Drakelist! Go Cowboys!
From Bob in NM, home of the Big Bird, (in my oven). Hi hi.
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by Drake.
Bob K9JU
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prefer to keep my Drake parts OEM.
Thanks to those that helped and 73 to all,
Bob AG5X___
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I need a few crystals for my SPR-4. Is there a preferred source?
Thanks,
Bob AG5X___
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For an SPR-4, I'm looking for:
a.. 5-NB noise blanker
b.. SCC-4 Crystal Calib.
Failing that, does anyone know if there's PCBs available to HB my own?
a.. Also looking for a roll of decals for the preselector dial.
Any help much appreciated.
Thanks and 73 to all,
Bob
critical so any silicon diode with sufficient
current carrying capability (100 mA or more) and reverse breakdown voltage
rating (300 Vdc or more) should work. Comments Garrey?
Bob K9JU
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,
Bob, K1NOK
PS Hunter, check the crystal frequencies below for the FS-4 to operate with
the R-4C.
R-4 and T-4X9.6Mhz crystal
SPR-4 9.59 Mhz crystal
2-C 9.5Mhz crystal and add 7 Mhz. to FS-4 readout
for proper frequency
I have #2277 Drake 2B and it does not have the red button either. It
has the 8BN8 tube.
73, Bob W5GU
On 8/18/10 1:49 PM, Garey Barrell wrote:
Paul -
Hm... The FIRST 2-A schematic is 1001, and the 2-A did NOT have
the button on the dial. The first 2-B schematic I've been able
Posting for a friend.
*Drake SPR-4 general coverage rcvr, original manual, AC line cord,
cigarette lighter DC line cord, 5-NB noise blanker, SCC-4 calibrator,
AL-4 LF loop antenna, homemade RY-4 RTTY adaptor. Comes with 40 crystals,
23 of which are in the rcvr, 17 in an outboard crystal deck.
Posting for a friend.
*Drake SPR-4 general coverage rcvr, original manual, AC line cord,
cigarette lighter DC line cord, 5-NB noise blanker, SCC-4 calibrator,
AL-4 LF loop antenna, homemade RY-4 RTTY adaptor. Comes with 40 crystals,
23 of which are in the rcvr, 17 in an outboard crystal deck.
George, I had a similar experience with an R-4C that still had the 6EJ7 third
mixer. However, the noise was from the IF Amplifier, V5, a 6BA6. New tube in
and the intermittant solar storm noise was gone.
Bob K9JU
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been in
storage for some period of time before it was sold to me.
73,
Bob K9JU
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. I suspect it was in storage for a
period of time in a damp environment. The chassis does not show any pitting or
signs of deterioration due to humidity which one might expect with the presence
of the odor.
Has any one else come across this kind of problem and found a solution for same?
Bob
The transmitter...T-4XC
The culprit...80 meter crystal.
The transmitted frequency on 80 is 10-11 kHz lower than it should be
compared to the crystals on the other bands. Are there trimmers that
adjust the crystal frequencies?
Thanks,
Bob W5GU
Thanks Garey,
I'm using a 2B to receive with so I'll have to get a replacement when I
can't stand it any longer.
Bob, W5GU
On 7/16/10 2:34 PM, Garey Barrell wrote:
Bob -
Nope, no adjustment. Doubtful that a reasonable adjustment range
would pull that in anyway! :-)
Bob -
You could
Tom - I don't know the number produced, but the original TR-7 was sold
without the Digital Display. At that time the DR-7 was an option.
This was quickly changed to what we know now.
73 Bob W7AVK
Home of the TR-7 Service kits and PIN Diodes
On 7/6/2010 11:01 PM, Tom Evans, AG9X wrote
Hi
I am refurbishing an L4B which for some reason is missing its band-change
control knob. I wonder if anyone here can guide me to the source of a
replacement?
Any help much appreciated.
Many thanks.
Bob, 5B4AGN
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