[drakelist] Wanted: Drake 2B

[Richard Arland, W3OSS]

"Richard Arland, W3OSS" <[EMAIL PROTECTED]> made an utterance to the drakelist 
gang
--
Looking for a 2B in reasonable condx (not collector quality) for daily use 
at W3OSS.

PLS contact me OFF-LIST

73 es tnx

Rich W3OSS 


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Re: [drakelist] R4A, S-meter no longer working

[Garey Barrell]

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

C159 may be very leaky or shorted.   0.1 uF at 200V.  You may have a 
fault in T10.  B+ is applied to V5 through the primary of T10 and one 
end of the secondary is at ground.  Check DC voltages on either side of 
T10.  A plate-suppressor grid short in V5 could have smoked T10, so use 
a known good tube.


The 6HS6 filament is just a filament wiring anomaly.   According to s/n 
4054 schematic Pin 4 should be 6.3 and Pin 3 should be 0.  What is the 
s/n of your R-4A?  I have the correct schematic.


73, Garey - K4OAH
Glen Allen, VA

Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs




Chuck Grandgent wrote:

The plot thickens.
I checked resistance and voltage at all the pins for V2, V3, V4, V5.
The two bads are:
  1) V5 12BA6 pin 5 (plate), resistance is 150 ohms, s/b 10k.  And 
votage is 3 volts, s/b 110v
I guess R41 and maybe R142 bear more checking, though if either of 
these went high, I can't account for the low plate to ground 
resistance through this fault.

Swapped this tube also with no effect.

  2) V2 6HS6, manual says pin 3 (filament) s/b 6.3, is zero and pin 4 
(filament) s/b 12.6, is 6.4.  Looking at the schematic, not sure what 
to make of that.  And actually I did swap between my two 6HS6's with 
no difference.


   Chuck, K1OM

On Feb 10, 2008 6:54 PM, Chuck Grandgent <[EMAIL PROTECTED] 
> wrote:


OK, got some time to spend on this today.
R40, R41, R42, and R89 SEEMED to checkout OK.
However, if I put a potentiometer across R41 and adjust it for a
low value, I can get the S-meter to respond.  Then, the S-meter
zero adjustment R42 can bring the S-meter to any level on the meter. 
But, it seems totally non-responsive to any received signal.


I was also able to adjust the receiver sensitivity potentiometer
on the bottom so TP2 was minus 1.35 volts.

I replaced V4, V5, and V3, with no discernable difference.  I
didn't have a spare for V2 6HS6.

What to check now ?

Thanks,   Chuck, K1OM


On Feb 6, 2008 5:12 PM, Garey Barrell <[EMAIL PROTECTED]
> wrote:


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

OK.  That's good!

 From your description, the AVC circuitry is working...

I don't have a good photo, but I bet three of the four
components are on
the board with the S-Meter Sensitivity pot, next to the
crystal.  R40
(1k Trim), R41 (820), R89 (560) and associated connections.  A
series of
ohmmeter checks should find it.  I'm betting R40 is open, or a
broken
wire/connection.  :-)

73, Garey - K4OAH
Glen Allen, VA

Drake 2-B, 4-B & C-Line Service Supplement CDs
http://www.k4oah.com>>



Chuck Grandgent wrote:
> Thanks Garey,
>
> well the meter seems OK, the DMM on lowest resistance range
causes it
> to deflect a tad.  I had to repair the AVC switch at one
point, I
> guess I should check there, among other places.
>
>Chuck, K1OM
>
> On Feb 6, 2008 4:20 PM, Garey Barrell <[EMAIL PROTECTED]

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

> Chuck -
>
> The S-Meter is a simple bridge circuit that compares the
plate current
> of V2 and V3 with the plate current of V4 and V5.  There
are only two
> resistors and two trim-pots!  Since the radio seems to
be working more
> or less normally, those tubes are probably "good
enough".  If the
> meter
> needle is just sitting there on the mechanical zero
point, it's most
> likely an "open" in that circuitry.  Just as a guess,
I'd first check
> the meter terminal connections, then wonder about the
S-Meter
> Sensitivity pot, but it could be a bad connection or
(YIKES!) an open
> meter movement.  The movement itself is 3 mA, as are ALL
the R-4/T-4
> meters, so can be checked with a DMM for continuity.
 Don't try to
> use a
> VOM, as they put too much current through the ohmmeter
cir

[drakelist] Drake 2B

[William Rogers]

William Rogers <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Hi Garey!

Received your Drake 2B info CD in the mail. Thank you for your tips in the
enclosed note. I found 2 bad 6BE6s. Putting one back in made the voltage
drop to about -14 V. Putting the other one in dropped the voltage way down
(less than -10). I replaced both with 5750 tubes and the Drake 2B now works
like a champ. Will try to secure a couple of spares just in case.

Guys, if the TR series is as good or better than the 2B series, it will be
of great assistance in working on these boatanchor gems! (Not affiliated
with Garey, just a very happy customer!)

73 everyone

Will Rogers
W4WLR



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Re: [drakelist] Adding more Xtals to the R4A/B/C.

[Robert Look]

Im almost thinking it might be easier to buy a second R4B, populate it with the 
extra xtals than fabricate an outboard device.  On the other hand its also fun 
to build something. But I gotta get the taxes done and all the honey do's first!

Bob W8JHA
  - Original Message - 
  From: EP Swynar 
  To: [EMAIL PROTECTED] 
  Sent: Friday, February 15, 2008 10:01 AM
  Subject: Re: [drakelist] Adding more Xtals to the R4A/B/C.


  Hi Bob,

  Have you seen the going prices for those FS4 units on eBay lately...? Talk 
about sticker shock...!

  Your idea of an outboard extra switch is a good one, & I've in fact been 
running that very notion through my own mind here, for benefit of the R-4 that 
I acquired over Christmas...

  If worse comes to worst, Bob, & you decide to mortgage the house for an FS4, 
please consider VE3CUI / VE3XZ to be a worthy recipient of any & all of your 
surplus crystals...! I promise to give each & every one of them a good home 
here, Hi Hi...

  ~73~ Eddy VE3CUI - VE3XZ


  *


- Original Message - 
From: Robert Look 
To: [EMAIL PROTECTED] 
Sent: Thursday, February 14, 2008 6:11 PM
Subject: [drakelist] Adding more Xtals to the R4A/B/C.


I was wondering if anyone had built an add on xtal bank for their Drake 
4A/B or C?  I have extra xtals, and have fully populated the slots in my R4B & 
R4C, so I thought of making up an add on "bank" to accomadate the additonal 
xtals I have.  Yea, I kown I could use an FS4, but finding a home for some of 
these misc xtals would be nice.  

I was hoping someone had done this and had a parts list that I could use.  
Any thoughts?

Bob W8JHA

Re: [drakelist] R4A, S-meter no longer working

[Chuck Grandgent]

The plot thickens.
I checked resistance and voltage at all the pins for V2, V3, V4, V5.
The two bads are:
  1) V5 12BA6 pin 5 (plate), resistance is 150 ohms, s/b 10k.  And votage is
3 volts, s/b 110v
I guess R41 and maybe R142 bear more checking, though if either of these
went high, I can't account for the low plate to ground resistance through
this fault.
Swapped this tube also with no effect.

  2) V2 6HS6, manual says pin 3 (filament) s/b 6.3, is zero and pin 4
(filament) s/b 12.6, is 6.4.  Looking at the schematic, not sure what to
make of that.  And actually I did swap between my two 6HS6's with no
difference.

   Chuck, K1OM

On Feb 10, 2008 6:54 PM, Chuck Grandgent <[EMAIL PROTECTED]> wrote:

> OK, got some time to spend on this today.
> R40, R41, R42, and R89 SEEMED to checkout OK.
> However, if I put a potentiometer across R41 and adjust it for a low
> value, I can get the S-meter to respond.  Then, the S-meter zero adjustment
> R42 can bring the S-meter to any level on the meter.
> But, it seems totally non-responsive to any received signal.
>
> I was also able to adjust the receiver sensitivity potentiometer on the
> bottom so TP2 was minus 1.35 volts.
>
> I replaced V4, V5, and V3, with no discernable difference.  I didn't have
> a spare for V2 6HS6.
>
> What to check now ?
>
> Thanks,   Chuck, K1OM
>
>
> On Feb 6, 2008 5:12 PM, Garey Barrell <[EMAIL PROTECTED]> wrote:
>
> >
> > Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist
> > gang
> > --
> > Chuck -
> >
> > OK.  That's good!
> >
> >  From your description, the AVC circuitry is working...
> >
> > I don't have a good photo, but I bet three of the four components are on
> > the board with the S-Meter Sensitivity pot, next to the crystal.  R40
> > (1k Trim), R41 (820), R89 (560) and associated connections.  A series of
> > ohmmeter checks should find it.  I'm betting R40 is open, or a broken
> > wire/connection.  :-)
> >
> > 73, Garey - K4OAH
> > Glen Allen, VA
> >
> > Drake 2-B, 4-B & C-Line Service Supplement CDs
> > 
> >
> >
> >
> > Chuck Grandgent wrote:
> > > Thanks Garey,
> > >
> > > well the meter seems OK, the DMM on lowest resistance range causes it
> > > to deflect a tad.  I had to repair the AVC switch at one point, I
> > > guess I should check there, among other places.
> > >
> > >Chuck, K1OM
> > >
> > > On Feb 6, 2008 4:20 PM, Garey Barrell <[EMAIL PROTECTED]
> > > > wrote:
> > >
> > >
> > > Garey Barrell <[EMAIL PROTECTED] >
> > > made an utterance to the drakelist gang
> > >
> > --
> > > Chuck -
> > >
> > > The S-Meter is a simple bridge circuit that compares the plate
> > current
> > > of V2 and V3 with the plate current of V4 and V5.  There are only
> > two
> > > resistors and two trim-pots!  Since the radio seems to be working
> > more
> > > or less normally, those tubes are probably "good enough".  If the
> > > meter
> > > needle is just sitting there on the mechanical zero point, it's
> > most
> > > likely an "open" in that circuitry.  Just as a guess, I'd first
> > check
> > > the meter terminal connections, then wonder about the S-Meter
> > > Sensitivity pot, but it could be a bad connection or (YIKES!) an
> > open
> > > meter movement.  The movement itself is 3 mA, as are ALL the
> > R-4/T-4
> > > meters, so can be checked with a DMM for continuity.  Don't try to
> > > use a
> > > VOM, as they put too much current through the ohmmeter circuit.
> > >
> > > 73, Garey - K4OAH
> > > Glen Allen, VA
> > >
> > > Drake 2-B, 4-B & C-Line Service Supplement CDs
> > > http://www.k4oah.com>>
> > >
> > >
> > >
> > > Chuck Grandgent wrote:
> > > > R4A, S-meter was working OK, just noticed it is not right now,
> > don't
> > > > know for quite how long.
> > > >
> > > > AVC is working, as evidenced by turning RF gain all the way down
> > and
> > > > then back up, AVC slow takes very noticeably longer for the RF
> > > leve to
> > > > return once I turn up RF gain, compared to AVC fast.
> > > >
> > > > Adjusting R40 and R42 for S-meter and balance have zero effect,
> > > > S-meter is all the way to the left.
> > > >
> > > > Things to try ?
> > > >
> > > > Tnx, Chuck, K1OM
> > > >
> > >
> > >
> >
> > --
> > Submissions:[EMAIL PROTECTED]
> > Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in
> > body
> > Hopelessly Lost:[EMAIL PROTECTED] - help in body of message
> > Zerobeat Web Page:  www.zerobeat.net - sponsored by www.tlchost.net
> > --
> >
>
>

Re: [drakelist] Net times & Freqs.

[k9sqg]

My spam blocker is "off".? That is, I allow any and all email and spam.? The 
problem with AOL is not just with incoming email, AOL also deletes outgoing 
email to others, even those with AOL accounts for which I've emailed for years, 
on a random basis.? Hence, if somebody emails me and I don't respond in 24-48 
hours, it is likely due to an AOL problem.



Having said that, there are additional resources available for Drake 
enthusiasts including a website hosted by Ron, WB4HFN, as well as:



The Old Gear, Junk, and Amplifier Builders' Net, 7275, Saturday, 1000 EST.



The Georgia 40 Meter Traders' Net, 7275, Sunday, 0900 EST.

And the 3898 Gator Traders' Net, 3898, Monday, 8 pm, EST.

All of the above can be used for buying, selling, and swapping Drake gear, 
parts, etc.? And for those needing technical assistance, there is the Drake 
Technical Net, 7238, Sunday, 3 PM EST, this time of year, 2000 hours always, 
and shifting to 4 PM EST for the summer months.

Enjoy those Drakes.

73,

Evan

-Original Message-
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Fri, 15 Feb 2008 10:20 am
Subject: Re: [drakelist] Net times & Freqs.




[EMAIL PROTECTED] writes:


Sunday, 2000 Zulu, 7238mhz??Tuesday, 2000 EST 3.865mhz Terry K7WLD
Terry K7WLD



Terry, those are correct?, Carl WD8NHK

?

FWIW ?I have?not had a problem with AOL chopping things off indiscriminately. 
Could it be the way you have your spam blocker set up? 




The year's hottest artists on the red carpet at the Grammy Awards. AOL Music 
takes you there.



More new features than ever.  Check out the new AOL Mail ! - 
http://webmail.aol.com

Re: [drakelist] Net times & Freqs.

[Gypsymt34]

[EMAIL PROTECTED] writes:

Sunday,  2000 Zulu, 7238mhz  Tuesday,  2000 EST 3.865mhz 
Terry K7WLD 

Terry, those are correct , Carl WD8NHK
 
FWIW  I have not had a problem with AOL chopping things off  
indiscriminately. Could it be the way you have your spam blocker set up? 



**The year's hottest artists on the red carpet at the Grammy 
Awards. Go to AOL Music.  
(http://music.aol.com/grammys?NCID=aolcmp0030002565)

Re: [drakelist] Adding more Xtals to the R4A/B/C.

[EP Swynar]

Hi Bob,

Have you seen the going prices for those FS4 units on eBay lately...? Talk 
about sticker shock...!

Your idea of an outboard extra switch is a good one, & I've in fact been 
running that very notion through my own mind here, for benefit of the R-4 that 
I acquired over Christmas...

If worse comes to worst, Bob, & you decide to mortgage the house for an FS4, 
please consider VE3CUI / VE3XZ to be a worthy recipient of any & all of your 
surplus crystals...! I promise to give each & every one of them a good home 
here, Hi Hi...

~73~ Eddy VE3CUI - VE3XZ


*


  - Original Message - 
  From: Robert Look 
  To: [EMAIL PROTECTED] 
  Sent: Thursday, February 14, 2008 6:11 PM
  Subject: [drakelist] Adding more Xtals to the R4A/B/C.


  I was wondering if anyone had built an add on xtal bank for their Drake 4A/B 
or C?  I have extra xtals, and have fully populated the slots in my R4B & R4C, 
so I thought of making up an add on "bank" to accomadate the additonal xtals I 
have.  Yea, I kown I could use an FS4, but finding a home for some of these 
misc xtals would be nice.  

  I was hoping someone had done this and had a parts list that I could use.  
Any thoughts?

  Bob W8JHA