Re: [drakelist] PS-7 CONNECTOR

[Jeff Kelly]

I also have a PS-7 power cable harness and a 
few connectors
available.
 
Jeff
KT2K
 

  - Original Message - 
  From: 
  [EMAIL PROTECTED] 
  To: drakelist@www.zerobeat.net 
  Sent: Tuesday, December 06, 2005 11:39 
  PM
  Subject: [drakelist] PS-7 CONNECTOR
  Hi, Someone was emailing me about  
  needing a connector for the PS-7.  If this was you, please contact me 
  again. I appear to have lost your email 
  address.Thanks,John,  
W4AWM

Fwd: Re: [drakelist] Questions regarding a Drake TR-4 problem

[Jack Griffin]

Jack Griffin <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--

> Karl and the others with TR-4 Drive problems,
> Just installed an old 9.000 mhz rock (measured
> 9.4) in the TR-4 that I have not been able to
fix.
> It seems to have done the trick. I can get the
'noise'
> pitch equalized per the manual and finally got Drive
> and decent Output from the rig. The new JAN 9.00
> rock that actually measured about 9.004 did not work
> at all. I did nothing else but change the rock. Will
> have to get on the horn with JAN and also check the
> two other rocks (42.5 and 43.6) I got from them to
see
> if they are any good.
> The original 9.0 rock in this rig was running
too
> low in freq., but the new JAN one was much too high.
> Hope this helps the others with this problem.
> I will probably put the original rock back in just
to
> make sure. 
> See the Handbook for the MPF-102 Crystal osc. if you
> need something to check crystal freq; but the 'pitch
> test' in the TR-4 manual seems to be a good
indicator.
> IRC may be a better source  for these items; not
sure.
> 73, jack WA1BRI/4
> 
> --- Karl Corder <[EMAIL PROTECTED]> wrote:
> 
>> Jack, yes you can order them from International
>> Radio Corporation.
>> They cost $110 each. There E-Mail address is
>> [EMAIL PROTECTED] .
>> I called them up and he didn't want to sell me
>> something that
>> might not fix the problem unless i was sure of what
>> was causing the 
>> problem, so that is why I am holding off. I really
>> appreciate your
>> reply and any info you find out. -Karl
>> 
>> ps I did order their catalog, which they will send
>> you for free.
>> 
>> 
>> - Original Message - 
>> From: "Jack Griffin" <[EMAIL PROTECTED]>
>> To: "Karl Corder" <[EMAIL PROTECTED]>
>> Sent: Monday, December 05, 2005 8:59 PM
>> Subject: Re: [drakelist] Questions regarding a
Drake
>> TR-4 problem
>> 
>> 
>> > Karl,
>> > We are not the only ones with this problem have
>> seen
>> > it on here before. Just received another used
>> 9.000
>> > rock from a TR-3. put this in my rock tester and
>> it is
>> > showing 9.04; lot better than the JAN unit.
>> Will
>> > throw it in tonite or tomorrow and let you know
>> what
>> > happens.
>> > Hope it is not a filter problem; don't think you
>> can
>> > get these except from a butchered rig and I do
not
>> do
>> > that.
>> > 73, jack
>> > 
>> > --- Karl Corder <[EMAIL PROTECTED]> wrote:
>> > 
>> >> Jack, thank you very much for the information. I
>> >> don't fully understand
>> >> the operation of the TR-4 but I keep going over
>> the
>> >> schematic looking
>> >> for a clue that would cause this condition to
>> ocure.
>> >> If you 
>> >> discover something please let me know. thanks
>> again
>> >> -Karl
>> >> 
>> >> 
>> >> - Original Message - 
>> >> From: "Jack Griffin" <[EMAIL PROTECTED]>
>> >> To: "Karl Corder" <[EMAIL PROTECTED]>
>> >> Sent: Monday, December 05, 2005 5:14 PM
>> >> Subject: Re: [drakelist] Questions regarding a
>> Drake
>> >> TR-4 problem
>> >> 
>> >> 
>> >> > Karl,
>> >> > I am having the same problem with my TR-4.
Been
>> >> > working around the Bal. Mod. and the 9.000 mhz
>> osc
>> >> as
>> >> > well. My old 9.000 rock was running too low in
>> >> > frequency even with adjusting C-130. I could
>> not
>> >> get
>> >> > any drive nor could I get the same pitch on a
>> >> noise
>> >> > signal per the Drake alignment instructions.
>> After
>> >> > checking the tubes, including substituting a
>> known
>> >> > good one from a working TR-4 and checking the
>> BM
>> >> > diodes; I ordered a new JAN rock. Took about
>> three
>> >> > weeks to get it; put it in and now the 9.000
>> osc
>> >> is
>> >> > running too high in frequency. Once again
C-130
>> >> cannot
>> >> > bring it down where it belongs either in RX or
>> in
>> >> Tune
>> >> > (X-CW), where the osc. is suppossed to shift
>> from
>> >> > about 9.000 to 9.001 (I think; haven't got the
>> >> manual
>> >> > in front of me.) so a signal can get through
>> the
>> >> > crystal filters.
>> >> > Sent an email to JAN to see if they might have
>> >> done
>> >> > the rock wrong. I did test it on my MPF-102
>> >> crystal
>> >> > osc. and it measured 9.00458 on my freq.
>> counter.
>> >> > From where I sit, your lack of test gear does
>> not
>> >> > matter; I have about all I need and still
>> cannot
>> >> get
>> >> > this thing working.
>> >> > BTW, Drake used at least two values for C-130
>> in
>> >> the
>> >> > TR-4 series. I have rigs with a 5-25 and
8-30pf
>> in
>> >> > them.
>> >> > Will keep the group informed as I deal with
>> this
>> >> one.
>> >> > they ahve been helping me on this problem for
>> the
>> >> past
>> >> > 3-4 months.
>> >> > 73, Jack, WA1BRI/4





__ 
Yahoo! DSL – Something to write home about. 
Just $16.99/mo. or less. 
dsl.yahoo.com 

Re: [drakelist] 2B vs. R4B

[Garey Barrell]

Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Steve -

The 2-B Passband tuner has three L/C bandwidths available.

0.5 kHz at -6 dB // 2.75 kHz at -60 dB
2.1 kHz at -6 dB // 7.50 kHz at -60 dB
3.6 kHz at -6 dB // 10.5 kHz at -60 dB


The R-4/A/B all have four L/C bandwidths.

0.4 kHz at -6 dB // 2.6 kHz at -60 dB
1.2 kHz at -6 dB // 4.8 kHz at -60 dB
2.4 kHz at -6 dB // 8.2 kHz at -60 dB
4.8 kHz at -6 dB // 20 kHz at -60 dB


The R-4C has two crystal bandwidths standard.

2.4 kHz at -6 dB // 4.2 kHz at -60 dB
8 kHz at -6 dB // 28 kHz at -60 dB (Roofing Filter)

Optional filters were available.

250 Hz at -6 dB // 600 Hz at -60 dB
500 Hz at -6 dB //  1000 Hz at -60 dB
1.5 kHz at -6 dB // 3 kHz at -60 dB

Optional filters in AM Mode ONLY.

4 kHz at -6 dB // 7.5 kHz at -60 dB
6 kHz at -6 dB // 10 kHz at -60 dB

The 2-BQ Q Multiplier is a VERY effective accessory for the 2-B.  It 
offers a variable bandwidth, tunable IF peaking filter for CW or a 
tunable IF notch filter.   The Heath Q Multipliers work just about the 
same, since the circuit is almost identical.  The QF-1 requires power 
(available from the 2-B Accy Jack).


73, Garey - K4OAH
Atlanta

Drake C-Line Service Manual




Steve Berg wrote:



Steve Berg <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
How do the 2B selectivity curves compare with the R4B curves?  I'm new 
to Drake equipment and thought that the 4 series used crystal filters. 
A thread here now tells me that this is not the case.  Also, how well 
do the 2B receivers work with Q multipliers like the 2BQ and the 
Heathkit series?  I use my 2B with a Gonset GSB-100 exciter, probably 
heresy on this list, but they work well together on both CW and SSB 
from my limited experience.


73,

Steve WA9JML


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RE: [drakelist] 2B vs. R4B

[Gerry]

"Gerry" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
An interesting aside is that the L/C pass band filter in both the 2-B and
R-4 series below the C are interchangeable. I had a parts unit R-4B with a
good filter unit and transplanted it temporarily in my 2-B just for
curiosity. It worked fine but of course I would have had to make some kind
of switch plate for the front panel to identify the selectivity positions
and the tuning ranges. Instead I'm building a 2 section coupled resonator to
use on the 2-B strictly for AM reception. I don't like that 3.6kHz position
in the 2-B and modifying the filter unit for a wider pass band is not
practical.

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Garey Barrell
Sent: Wednesday, December 07, 2005 12:46 PM
To: Steve Berg
Cc: drakelist@www.zerobeat.net
Subject: Re: [drakelist] 2B vs. R4B


Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Steve -

The 2-B Passband tuner has three L/C bandwidths available.

0.5 kHz at -6 dB // 2.75 kHz at -60 dB
2.1 kHz at -6 dB // 7.50 kHz at -60 dB
3.6 kHz at -6 dB // 10.5 kHz at -60 dB


The R-4/A/B all have four L/C bandwidths.

0.4 kHz at -6 dB // 2.6 kHz at -60 dB
1.2 kHz at -6 dB // 4.8 kHz at -60 dB
2.4 kHz at -6 dB // 8.2 kHz at -60 dB
4.8 kHz at -6 dB // 20 kHz at -60 dB


The R-4C has two crystal bandwidths standard.

2.4 kHz at -6 dB // 4.2 kHz at -60 dB
8 kHz at -6 dB // 28 kHz at -60 dB (Roofing Filter)

Optional filters were available.

250 Hz at -6 dB // 600 Hz at -60 dB
500 Hz at -6 dB //  1000 Hz at -60 dB
1.5 kHz at -6 dB // 3 kHz at -60 dB

Optional filters in AM Mode ONLY.

4 kHz at -6 dB // 7.5 kHz at -60 dB
6 kHz at -6 dB // 10 kHz at -60 dB

The 2-BQ Q Multiplier is a VERY effective accessory for the 2-B.  It 
offers a variable bandwidth, tunable IF peaking filter for CW or a 
tunable IF notch filter.   The Heath Q Multipliers work just about the 
same, since the circuit is almost identical.  The QF-1 requires power 
(available from the 2-B Accy Jack).

73, Garey - K4OAH
Atlanta

Drake C-Line Service Manual




Steve Berg wrote:

>
> Steve Berg <[EMAIL PROTECTED]> made an utterance to the drakelist gang
> --
> How do the 2B selectivity curves compare with the R4B curves?  I'm new 
> to Drake equipment and thought that the 4 series used crystal filters. 
> A thread here now tells me that this is not the case.  Also, how well 
> do the 2B receivers work with Q multipliers like the 2BQ and the 
> Heathkit series?  I use my 2B with a Gonset GSB-100 exciter, probably 
> heresy on this list, but they work well together on both CW and SSB 
> from my limited experience.
>
> 73,
>
> Steve WA9JML
>
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[drakelist] Need information on etek FR-4tr

[vmckever]

I have a etek FR-4tr and want to hook it up to my 
Drake TR4C.  There are two RCA phone jacks on the back.  I have no 
book or information other what I found at the Drake Museum on line.  Thanks 
for any help
 
Vincent N6OA

Re: [drakelist] 2B vs. R4B

[Garey Barrell]

Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Gerry -

Yes, they are completely interchangeable.   Same schematic and design.  
Just a slight modification to capacitor values to change the b/w and add 
the fourth position.   They all use a novel design and it's amazing to 
think that it was done with a slide rule, not a computer!   I suspect 
there were more than a few iterations involved!


The widest passband in the 4 Series was achieved by disabling the fourth 
section entirely.


There was also a mechanical filter adapter offered by Henry Radio for 
the 2-B using a Collins mechanical filter.


73, Garey - K4OAH
Atlanta

Drake R-4C Service Information CD
http://www.k4oah.com




Gerry wrote:


An interesting aside is that the L/C pass band filter in both the 2-B and
R-4 series below the C are interchangeable. I had a parts unit R-4B with a
good filter unit and transplanted it temporarily in my 2-B just for
curiosity. It worked fine but of course I would have had to make some kind
of switch plate for the front panel to identify the selectivity positions
and the tuning ranges. Instead I'm building a 2 section coupled resonator to
use on the 2-B strictly for AM reception. I don't like that 3.6kHz position
in the 2-B and modifying the filter unit for a wider pass band is not
practical.

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Garey Barrell
Sent: Wednesday, December 07, 2005 12:46 PM
To: Steve Berg
Cc: drakelist@www.zerobeat.net
Subject: Re: [drakelist] 2B vs. R4B


Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Steve -

The 2-B Passband tuner has three L/C bandwidths available.

0.5 kHz at -6 dB // 2.75 kHz at -60 dB
2.1 kHz at -6 dB // 7.50 kHz at -60 dB
3.6 kHz at -6 dB // 10.5 kHz at -60 dB


The R-4/A/B all have four L/C bandwidths.

0.4 kHz at -6 dB // 2.6 kHz at -60 dB
1.2 kHz at -6 dB // 4.8 kHz at -60 dB
2.4 kHz at -6 dB // 8.2 kHz at -60 dB
4.8 kHz at -6 dB // 20 kHz at -60 dB


The R-4C has two crystal bandwidths standard.

2.4 kHz at -6 dB // 4.2 kHz at -60 dB
8 kHz at -6 dB // 28 kHz at -60 dB (Roofing Filter)

Optional filters were available.

250 Hz at -6 dB // 600 Hz at -60 dB
500 Hz at -6 dB //  1000 Hz at -60 dB
1.5 kHz at -6 dB // 3 kHz at -60 dB

Optional filters in AM Mode ONLY.

4 kHz at -6 dB // 7.5 kHz at -60 dB
6 kHz at -6 dB // 10 kHz at -60 dB

The 2-BQ Q Multiplier is a VERY effective accessory for the 2-B.  It 
offers a variable bandwidth, tunable IF peaking filter for CW or a 
tunable IF notch filter.   The Heath Q Multipliers work just about the 
same, since the circuit is almost identical.  The QF-1 requires power 
(available from the 2-B Accy Jack).


73, Garey - K4OAH
Atlanta

Drake C-Line Service Manual




Steve Berg wrote:

 


Steve Berg <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
How do the 2B selectivity curves compare with the R4B curves?  I'm new 
to Drake equipment and thought that the 4 series used crystal filters. 
A thread here now tells me that this is not the case.  Also, how well 
do the 2B receivers work with Q multipliers like the 2BQ and the 
Heathkit series?  I use my 2B with a Gonset GSB-100 exciter, probably 
heresy on this list, but they work well together on both CW and SSB 
from my limited experience.


73,

Steve WA9JML

   


-


 


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Re: [drakelist] OT coax contamination?

[Ron Wagner]

Ron Wagner <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Thanks for all the replies.

Here is a bit more information.
Cable is labeled CZ connector and cable micro 8U. It was bought a Dayton 
many years ago.  It is used around the shack for jumpers.


The "sticky stuff" is most likely plasticizer.  It has not caused the 
center dielectric to change that I can tell.  It is however a pain because 
I can not get it clean enough to get a good solder.


Since there seems to be no black, I am guessing it is not "normal" 
contamination.  It may have caused issues with the cable, but I will have 
to figure a way to test it.  Ideas on testing solicited.


For testing, I have an MFJ antenna analyzer, Transmitters, watt meter, DVM 
and freq counter.  Not the best selection of test equipment, but along 
with a R10 receiver, normally enough to get me by.  I am thinking of 
testing power loss on 10 meters as a potential test of the coax?


73,
Ron
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Re: [drakelist] TR-4, TR-4C, TR-4Cw

[Ron Wagner]

Ron Wagner <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
"/Cw RIT" will run close to $1000.  Way overpriced for what it is, but they 
just didn't make that many of them.   Unfortunately, RIT is just about a 
necessity for CW operation today, since so many use very narrow filters and 
don't know how to tune around with their transceivers looking for signals! 
Just in case you're thinking of adding RIT to a TR-4CW, that's not very 
simple either.   The PTO in the "RIT" model has an RIT input, but none of the 
other 4 Series do.   The 'RIT' PTO is the same as used in the TR-7.




There is an article from June 66 QST for RIT on the TR3.  I put it on my 
TR3 with very little effort.  I took it off when I sold it.  I used the 
remote VFO connector for several of my connections.  I did not follow the 
article exactly.  I do not know how much RIT it gave me, but it did 
work well or SSB.


Basically it put a varactor diode on the PTO tube.  I think the newer 
Drake PTOs have a "lug" for use with RTTY which could be used for the RIT 
function connection.  All this is on memory, and mine is not like it 
was at one time.  Any way have a look at the Drake museum, I think the 
article is there.  If not, I think I still have a copy and can get it 
scanned.


73,
Ron
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Re: [drakelist] TR-4, TR-4C, TR-4Cw

[Garey Barrell]

Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--


Ron Wagner wrote:

"/Cw RIT" will run close to $1000.  Way overpriced for what it is, 
but they just didn't make that many of them.   Unfortunately, RIT is 
just about a necessity for CW operation today, since so many use very 
narrow filters and don't know how to tune around with their 
transceivers looking for signals! Just in case you're thinking of 
adding RIT to a TR-4CW, that's not very simple either.   The PTO in 
the "RIT" model has an RIT input, but none of the other 4 Series 
do.   The 'RIT' PTO is the same as used in the TR-7.




There is an article from June 66 QST for RIT on the TR3.  I put it on 
my TR3 with very little effort.  I took it off when I sold it.  I used 
the remote VFO connector for several of my connections.  I did not 
follow the article exactly.  I do not know how much RIT it gave me, 
but it did work well or SSB.


Basically it put a varactor diode on the PTO tube.  I think the newer 
Drake PTOs have a "lug" for use with RTTY which could be used for the 
RIT function connection.  All this is on memory, and mine is not like 
it was at one time.  Any way have a look at the Drake museum, I think 
the article is there.  If not, I think I still have a copy and can get 
it scanned.


73,
Ron


Ron -

The earlier tube PTOs were fairly easy to "RIT", because the tube was 
accessible and it didn't take much delta C to move them around.  The 
solid state PTOs were another story as there wasn't any easy way to 
shift the frequency without going "inside" the PTO, which is not a good 
idea for the inexperienced.   The RTTY terminal on the PTOs was designed 
to shift the frequency about 900 Hz or less with an external capacitor 
to ground.  The problem was that a large enough capacitor to get the 
typical 2-3 kHz shift for RIT became a significant source of temperature 
instability that was NOT compensated by the PTO tempco design.


The PTO in the TR-4Cw/RIT (and TR-7) had an internal varactor  tapped 
onto the inductor which gave the necessary shift with much less 
capacitance.  The "RTTY" terminal on the side of the PTO was used as the 
RIT terminal since by that time most had gone to AFSK for HF RTTY.


So yes, it "could" be done.  But not an entirely satisfactory solution, 
especially for the solid state units.


73, Garey - K4OAH
Atlanta

Drake R-4C Service Information CD
http://www.k4oah.com
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[drakelist] drake web ring

[Thom R LaCosta]

Thom R LaCosta <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Just a sharp stick in the eye to remind you that if you have a web site with 
Drake material on it, you can add it to the drake web ring.


It's easy enough to do, and requires insertion of html code on one page in your 
site...the one that folks will land on when the ring sends them there.


Of course, you could stay in the stand alone mode and wait for the world to beat 
a path to your door because you have a superior site, unique information or a

winning personality.

http://www.zerobeat.net/drakewebring/

Thom

www.baltimorehon.com/Home of the Baltimore Lexicon
www.tlchost.net/hosting/ Web Hosting as low as 3.49/month
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