Yes, I had an early R-4A with 5KHz markings and I currently have sn3740
an early 13 tube version that has 25KHz markings. My early T-4X has
5KHz markings so I have a mis-matched set :(
73,
Gary
WB6OGD
- Original Message -
From: Gary Poland gpola...@cinci.rr.com
To:
Like another Gary pointed out, the IF is in the way.
It will work to use a 16.1MHz crystal. You will get images and spurs though.
If you are lucky (I haven't run the numbers) they are far enough from the
60m channels to let you RECEIVE them... BUT do not try to TRANSMIT,
you will put out spurs
Nobody touched this one.
Yes Luke, there are early and later T-4X's.
Like you, I have an early one without vernier. It also has 5khz marks on the
main dial.
Later T-4X's get the vernier and only 25KHz marks. My R-4A is mid-production
and has
25KHz marks and vernier but is the earlier 13 tube
My 4-Line did the same (meters are less blue).
I had pretty good results with my quick-fix.
I just painted the pilot light with a blue-green Sharpie.
I also use the Red Sharpie on the dial adjust red dot. Makes it
like brand new.
73,
Gary
WB6OGD
- Original Message -
From: conklin richard
Ethan,
It is certainly some sort of FSK circuit. Actually, it looks like 2 FSK
circuits. Why 2? Well, if one is good, two must be better, right?
Back in the day, it was common to use both normal shift (850Hz) and
narrow shift (170Hz). Normally you just changed it by the control
voltage but
I saw a post not too long ago that said the T-4X meter changed during
production from 400MA to 500MA. I finally had time to look at this, and
sure enough my old early t-4X has the 400MA meter.
Not that it matters, I am just curious, what is the details on this change?
My manual says to tune up to
The connection to the main Rx is a bit touchy. I used a gimmick and
a small cap but that is less than ideal. Clifton Labs offers a
isolator on a small board that is the real answer.
Yes, you need something so the connection doesn't de-tune the Drake.
The Softrock radiates alot of
Hi Rick,
It sounds like maybe your transmitter is keyed all the time.
Is the meter showing the bias current or is is correctly on 0mA (receive mode).
Disconnect your mike and key if it is keyed.
When muted, the R-4C SHOULD put the meter to the top, and when ON will
receive even when you transmit.
Rick,
Garey's description is very good, except one typo
The transmitter MUTE connector should read OPEN when the transmitter is in
standby, and
shorted when in transmit.
Should be:
The transmitter MUTE connector should read SHORTED when the transmitter is in
standby, and
OPEN when in
Hi Carey,
I have some Softrocks too. I haven't tried to tap into my R-4A but
here is how I would start... I have successfully tapped into my
Icom PCR-100 and less successfully tapped my Kenwood TS-440s.
Tune your Flex to 5.645Mhz (R-4a 1st IF).
Take a small cap (10pf?) and hook it onto a coax
All this talk of rebuilding AC-4 supplies had me thinking...
I have seen a mod(?) that said to turn up(down?) the bias when running CW
(and FSK?) to set the finals more to Class C operation to save power
dissipation.
Is this a good idea? Wouldn't it be easy to add a switch or relay and
another
am trying to learn here... There probably IS some reason nobody did this
originally!
73,
Gary
WB6OGD
- Original Message -
From: Garey Barrell k4...@mindspring.com
To: Gary Winblad garywinb...@comcast.net
Cc: drakelist drakelist@zerobeat.net
Sent: Fri, 20 Jan 2012 15:31:44 - (UTC
Hi Garey,
Thanks, good explanation.
I'm not going to try it any time soon ;-)
73,
Gary
- Original Message -
From: Garey Barrell k4...@mindspring.com
To: Gary Winblad garywinb...@comcast.net
Cc: drakelist drakelist@zerobeat.net
Sent: Fri, 20 Jan 2012 23:24:40 - (UTC)
Subject: Re
And as another side note:
The beauty of having a separate receiver is that you can listen to your own
signal, you don't have to rely on reports from others.
If you find a difference in sound between LSB and USB, I wouldn't hesitate
to try moving C2 (carrier osc freq) while listening to your
-
From: Gary Winblad
To: kc9cdt
Cc: drakelist
Sent: Thu, Jan 12, 2012 10:53 pm
Subject: Re: [Drakelist] Interesting discovery/problem about R-4A
R-4B
I think what you are describing is perfectly normal.
Strong signals within the roofing 10Kc(KHz) filter WILL upset your
desired
Ok Lee,
NB is off...not that it matters, now...listen carefully...of course
you
hear the garbled opposite sideband...BUT also you hear a lot of
clicking/arcing like noise on voice peaks especially.
Loud enough to be a bother..
This is absolutely NOT reproducable(?) here.
Why is this a
Note, there are two rx doing the same (two serials)..
- Original Message -
From: Garey Barrell k4...@mindspring.com
To: kc9...@aol.com
Cc: drakelist@zerobeat.net
Sent: Sat, 14 Jan 2012 19:29:13 - (UTC)
Subject: Re: [Drakelist] Interesting discovery/problem about R-4A R-4B
Lee -
IS
Garey,
Do you copy Lee??
Gary
- Forwarded Message -
From: kc9...@aol.com
To: drakelist@zerobeat.net
Sent: Sat, 14 Jan 2012 22:19:21 - (UTC)
Subject: [Drakelist] Need relay to Garey K4OAH...
For some reason...Garey K4OAH...is not getting my e-mails???
Please contact me to do a relay
I think what you are describing is perfectly normal.
Strong signals within the roofing 10Kc(KHz) filter WILL upset your desired
weaker signal. The NB works by detecting and killing sharp noise spikes
BEFORE they get lengthened by passing through the narrow IF filter.
IIRC, it was a Drake
To go even more Off Topic...
YES Curt, you will like it a lot! W9TO was the designer, hence the name.
As a 15 year old kid in 1967 I built my version in our high school electronics
shop class. It has never missed a DIT since! As a confirmed Drake lover
even back then, I folded up a Drake
The first reference to this procedure that I know of was from Jan 1977
HR mag in a hints and kinks style post by W7DIM.
He says you can even peak up the LOAD control...
Like Garey, I make a table of all settings and just set them from that.
I need to set my Heath antenna tuner too. Just a
,
Gary
WB6OGD
- Original Message -
From: Garey Barrell k4...@mindspring.com
To: Gary Winblad garywinb...@comcast.net
Cc: kc9...@aol.com, drakelist@zerobeat.net
Sent: Mon, 02 Jan 2012 19:37:26 - (UTC)
Subject: Re: [Drakelist] kind to finals tuneup for the twins
Gary -
One thing I
a link??
73,
Gary
WB6OGD
- Original Message -
From: Garey Barrell k4...@mindspring.com
To: Gary Winblad garywinb...@comcast.net
Cc: drakelist@zerobeat.net
Sent: Mon, 02 Jan 2012 19:59:47 - (UTC)
Subject: Re: [Drakelist] Slightly Off-Topic: EICO 717 KEYER
Gary -
The 'TO Keyer' was never
? Wow, you are as
sick as me, I remember buying a new vernier drive for my
old SBE SB-34 when we went past the factory on my
honeymoon.
73 and Happy New Year,
Gary
WB6
- Original Message -
From: Al Parker anc...@ec.rr.com
To: Gary Winblad garywinb...@comcast.net
Cc: k4...@mindspring.com
Nice work Eddy.
I do my tests a little differently, I look at overall stability by zero
beating WWV.
Regardless, my early T-4X (5KHz markings) is also just about 1.2KHz.
But my slightly newer R-4A (13 tube, but 25KHz markings and vernier Preselector)
is worse at just about 1.5KHz.
IIRC, there
Something I haven't seen discussed and I have noticed on my R-4A is:
One end of the PTO range drifts A LOT more than the other end.
IIRC it is the high end of the dial (where the PTO slug is inside).
73,
Gary
WB6OGD
- Original Message -
From: Eddy Swynar deswy...@xplornet.ca
To:
HI,
Not sure if I can post to this list, I have tried for years...
This talk of changing crystal frequencies is great. Do you guys know about
penning?? Google it. I learned about it on the Softrock40 group. You can
take a cheap ( $1.00) computer crystal and change its frequency down by
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