[drakelist] Re: [drake-radio-operators] wont release

[Eric Webner]

I have been watching some 6ev7 tubes for my C-line on e-Bay. Not sure about the relay. 
 
gl,
 
Eric KA8FAN
ratfortman <[EMAIL PROTECTED]> wrote:
Hi group,Have had the TR4c back on the air recently and been doing well with it,until recently.When moving the switch to X-CW for tuning,and returning back to SSB,the relay seems to be sticking. The S meter hangs up,and the receiver is muted. The sidetone stops,but the xcvr is stuck in the xmit mode.Have been advised by John Kriner to try replacing the K1 relay,and/or the VOX tube (6EV7).Anyone have a reasonable source for these?73RustyWB9FIU



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Re: [drakelist] TR7 Display Problem

[Eric Webner]

Thanks for the reply Garey,
 
The end result is the choke shorting out against the shield, possibly.
 
Eric
Garey Barrell <[EMAIL PROTECTED]> wrote:
Garey Barrell <[EMAIL PROTECTED]>made an utterence to the drakelist gang--Eric -From what Bud said, I got the impression that the problem was caused by "scraping" the exposed wire of the RFC against the shield, other board, whatever in removing or inserting the VCO board. Those slots are small, and there are lots of protuberances and sharp edges to interfere. That choke is right on the edge of the board, and does stick up pretty high.73, Garey - K4OAHAtlantaDrake C-Line Service ManualEric Webner wrote:>> Bud,> > How did you guys determine that it was the choke. Did the core crack > from physical damage, or did it go intermittant or , , , ?>
 > 73,> > Eric KA8FAN>> */Garey Barrell <[EMAIL PROTECTED]>/* wrote:>>> Garey Barrell made an utterence to the drakelist gang> --> Wow! Talk about obscure>> The ONLY thing this choke does is filter the 24V supply to the PLL> Loop> amplifier chip, so the VCO was yanked way out of it's "normal" range.> I _TOLD_ you we needed to measure the loop error voltage! :-)> Yeah, right. At least now we know it really WILL go that high.>> Thanks for the feedback!>> 73, Garey - K4OAH> Atlanta>> Drake C-Line Service Manual> sebdesn wrote:>> >"sebdesn" made an utterence to the drakelist gang> >--> >Well finally,,,!
,>
 >> >Wanted to post the resolutio! n for the archives in case anyone> else has this> >problem.> >Many thanks to Bill Frost who had the final answer, and Garey> Barrell, and> >Peter VE3AX for some good troubleshooting suggestions.> > The rig showed 96800.0 on powerup(20m and below) and drifted down> >slightly. VFO did not change anything. Counter worked properly in> "ext"mode.> >All voltages from p/s board were OK. 10R and 10T on main board> were ok and> >switched properly xmit/ rcv. All oscillator freqs were there and> right on.> > The problem was choke RFC508 which is in the 24v circuit to the VCO> >board.It is on the VCO board and is in a position that could be> easily> >damaged inserting the board. Replaced that, fired things up, and> all is> >well. Will align and put on the air..> > Again tha!
nks to
 all who helped. This is a great list and in my> case, a> >real lifesaver!!!> >> >73,de Bud WØHG> >>--On Behalf of Garey Barrell <[EMAIL PROTECTED]>Submissions: drakelist@www.zerobeat.netUnsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in bodyHopelessly Lost: [EMAIL PROTECTED] - help in body of messageZerobeat Web Page: http://www.zerobeat.netBrought to you courtesy of TLCHost.net http://www.tlchost.net/--
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Re: [drakelist] TR-3 chassis caps

[Don and Diana Cunningham]

"Don and Diana Cunningham" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
You will likely get several different answers to this one, but I prefer the 
Sprague Orange Drop series caps for these in my 4 line stuff.  Mouser had 
them last time I needed some ( www.mouser.com ).  No financial connection, 
just good service and they don't have a minimum!!
73,
Don, WB5HAK 

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Re: [drakelist] TR-3 chassis caps

[Garey Barrell]

Garey Barrell <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Dave -
These are all "paper" caps, and as such may be replaced with just about 
any of the popular "Orange Drop" style caps.  Polyester, metalized film, 
polypropylene, film & foil, etc.

Generally speaking, capacitors smaller than 1 microfarad are almost 
always "paper" capacitors and those larger than 1 uF are almost always 
"electrolytic" capacitors.  Electrolytics are also "polarized" and will 
have some sort of marking to identify the Positive (+) or Negative (-) end.

73, Garey - K4OAH
Atlanta
Drake C-Line Service Manual


LeMoine Family wrote:
"LeMoine Family" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Inside the chassis of the TR-3 are 5 caps (.47 & .1 MFD).  All are axial
lead, cardboard tube with wax (?) ends.  I'm recapping the radio and power
supply.  What construction caps should I use to replace these (film,
metallized film, electrolytic,??)?
Thanks es 73, Dave KV4CN

 

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Re: [drakelist] TR7 Display Problem

[Garey Barrell]

Garey Barrell <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Eric -
From what Bud said, I got the impression that the problem was caused by 
"scraping" the exposed wire of the RFC against the shield, other board, 
whatever in removing or inserting the VCO board.  Those slots are small, 
and there are lots of protuberances and sharp edges to interfere.  That 
choke is right on the edge of the board, and does stick up pretty high.

73, Garey - K4OAH
Atlanta
Drake C-Line Service Manual


Eric Webner wrote:
Bud,
 
How did you guys determine that it was the choke. Did the core crack 
from physical damage, or did it go intermittant or , , , ?
 
73,
 
Eric KA8FAN

*/Garey Barrell <[EMAIL PROTECTED]>/* wrote:
Garey Barrell made an utterence to the drakelist gang
--
Wow! Talk about obscure
The ONLY thing this choke does is filter the 24V supply to the PLL
Loop
amplifier chip, so the VCO was yanked way out of it's "normal" range.
I _TOLD_ you we needed to measure the loop error voltage! :-)
Yeah, right. At least now we know it really WILL go that high.
Thanks for the feedback!
73, Garey - K4OAH
Atlanta
Drake C-Line Service Manual

sebdesn wrote:
>"sebdesn" made an utterence to the drakelist gang
>--
>Well finally
>
>Wanted to post the resolutio! n for the archives in case anyone
else has this
>problem.
>Many thanks to Bill Frost who had the final answer, and Garey
Barrell, and
>Peter VE3AX for some good troubleshooting suggestions.
> The rig showed 96800.0 on powerup(20m and below) and drifted down
>slightly. VFO did not change anything. Counter worked properly in
"ext"mode.
>All voltages from p/s board were OK. 10R and 10T on main board
were ok and
>switched properly xmit/ rcv. All oscillator freqs were there and
right on.
> The problem was choke RFC508 which is in the 24v circuit to the VCO
>board.It is on the VCO board and is in a position that could be
easily
>damaged inserting the board. Replaced that, fired things up, and
all is
>well. Will align and put on the air..
> Again thanks to all who helped. This is a great list and in my
case, a
>real lifesaver!!!
>
>73,de Bud WØHG
>
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Re: [drakelist] Keyer

[Jim Shorney]

"Jim Shorney" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
On Thu, 24 Feb 2005 18:40:44 -0600, Dennis wrote:

>
>Dennis <[EMAIL PROTECTED]> made an utterence to the drakelist gang
>--
>Any of the MFJ keyers work with the TR7???.   In the book it calls for a 
>positive keying voltage but MFJ does not talk about that.  They call it 
>either grid block or direct


I've used one of the MFJ/Bencher things on my TR7. Don't know the model
number, it's downstairs in a box right now and I'm too lazy to go look
for it. Grid block is for "vintage" tube rigs. Direct should be
appropriate for the TR7.

-- 
Jim Shorney  -->.<--Put complaints in this box
jshorney (at) inebraska.com
nu0c (at) amsat.org
Ham Radio NU0C
Lincoln, NE, USA
EN10ps
http://incolor.inetnebr.com/jshorney/

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[drakelist] TR-3 chassis caps

[LeMoine Family]

"LeMoine Family" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Inside the chassis of the TR-3 are 5 caps (.47 & .1 MFD).  All are axial
lead, cardboard tube with wax (?) ends.  I'm recapping the radio and power
supply.  What construction caps should I use to replace these (film,
metallized film, electrolytic,??)?
Thanks es 73, Dave KV4CN



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[drakelist] Keyer

[Dennis]

Dennis <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Any of the MFJ keyers work with the TR7???.   In the book it calls for a 
positive keying voltage but MFJ does not talk about that.  They call it 
either grid block or direct

Thanks
Dennis kw5g
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RE: [drakelist] Help on this itel

[Gerry]

They state the fact this is a homebrew
item not manufactured by Drake. I wonder why they posted that item there in the
first place seeing it has nothing to do with Drake except it probably started
out as a MS7 speaker cabinet.

 

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of JM
Sent: Wednesday, February 23, 2005
9:11 PM
To: drakelist@www.zerobeat.net
Subject: [drakelist] Help on this
itel

 

 

 



Hey
Gang,

 

Does anybody
know the Drake «  BP7 PRE SELECTOR » ?

 

Photo
available at http://www.dproducts.be/drake_museum/

Re: [drakelist] TR7 Display Problem

[Eric Webner]

Bud,
 
How did you guys determine that it was the choke. Did the core crack from physical damage, or did it go intermittant or , , , ?
 
73,
 
Eric KA8FAN
Garey Barrell <[EMAIL PROTECTED]> wrote:
Garey Barrell <[EMAIL PROTECTED]>made an utterence to the drakelist gang--Wow! Talk about obscureThe ONLY thing this choke does is filter the 24V supply to the PLL Loop amplifier chip, so the VCO was yanked way out of it's "normal" range. I _TOLD_ you we needed to measure the loop error voltage! :-) Yeah, right. At least now we know it really WILL go that high.Thanks for the feedback!73, Garey - K4OAHAtlantaDrake C-Line Service Manualsebdesn wrote:>"sebdesn" <[EMAIL PROTECTED]>made an utterence to the drakelist gang>-->Well finally>>Wanted to post the resolutio!
n for the
 archives in case anyone else has this>problem.>Many thanks to Bill Frost who had the final answer, and Garey Barrell, and>Peter VE3AX for some good troubleshooting suggestions.> The rig showed 96800.0 on powerup(20m and below) and drifted down>slightly. VFO did not change anything. Counter worked properly in "ext"mode.>All voltages from p/s board were OK. 10R and 10T on main board were ok and>switched properly xmit/ rcv. All oscillator freqs were there and right on.> The problem was choke RFC508 which is in the 24v circuit to the VCO>board.It is on the VCO board and is in a position that could be easily>damaged inserting the board. Replaced that, fired things up, and all is>well. Will align and put on the air..> Again thanks to all who helped. This is a great list and in my case, a>real lifesaver!!!>>73,de Bud WØHG>
 >--On Behalf of Garey Barrell <[EMAIL PROTECTED]>Submissions: drakelist@www.zerobeat.netUnsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in bodyHopelessly Lost: [EMAIL PROTECTED] - help in body of messageZerobeat Web Page: http://www.zerobeat.netBrought to you courtesy of TLCHost.net http://www.tlchost.net/--
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[drakelist] L7 power supply upgrade

[Mike Bryce]

Boys and girls...

Is there enough interest to remake the two pcbs hiding in the high voltage power supply used in the drake L4 amplifiers.

just doing a rough draft of what is needed, new high voltage caps, new higher current higher voltage diodes and the ability to us radial caps instead of axial ones

rough price will be about $150 for the complete two board set with all parts

Is there interest?

if so, perhaps we will move forward with the project.

if not, then say so.. and I'll take it off the stove

73

mike, wb8vge

Mike, WB8VGE
SunLight Energy Systems
The Heathkit Shop

http://www.seslogic.com
http://www.theheathkitshop.com/

Re: [drakelist] TR7 Display Problem

[Garey Barrell]

Garey Barrell <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Wow!   Talk about obscure
The ONLY thing this choke does is filter the 24V supply to the PLL Loop 
amplifier chip, so the VCO was yanked way out of it's "normal" range.  
I  _TOLD_  you we needed to measure the loop error voltage!   :-)   
Yeah, right.  At least now we know it really WILL go that high.

Thanks for the feedback!
73, Garey - K4OAH
Atlanta
Drake C-Line Service Manual


sebdesn wrote:
"sebdesn" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Well finally
Wanted to post the resolution for the archives in case anyone else has this
problem.
Many thanks to Bill Frost who had the final answer, and Garey Barrell, and
Peter VE3AX for some good troubleshooting suggestions.
 The rig showed 96800.0 on powerup(20m and below) and drifted down
slightly. VFO did not change anything. Counter worked properly in "ext"mode.
All voltages from p/s board were OK. 10R and 10T on main board were ok and
switched properly xmit/ rcv. All oscillator freqs were there and right on.
  The problem was choke RFC508 which is in the 24v circuit to the VCO
board.It is on the VCO board and is in a position that could be easily
damaged inserting the board. Replaced that, fired things up, and all is
well. Will align and put on the air..
  Again thanks to all who helped. This is a great list and in my case, a
real lifesaver!!!
73,de Bud WØHG
 

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[drakelist] TR7 Display Problem

[sebdesn]

"sebdesn" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
Well finally

Wanted to post the resolution for the archives in case anyone else has this
problem.
Many thanks to Bill Frost who had the final answer, and Garey Barrell, and
Peter VE3AX for some good troubleshooting suggestions.
  The rig showed 96800.0 on powerup(20m and below) and drifted down
slightly. VFO did not change anything. Counter worked properly in "ext"mode.
All voltages from p/s board were OK. 10R and 10T on main board were ok and
switched properly xmit/ rcv. All oscillator freqs were there and right on.
   The problem was choke RFC508 which is in the 24v circuit to the VCO
board.It is on the VCO board and is in a position that could be easily
damaged inserting the board. Replaced that, fired things up, and all is
well. Will align and put on the air..
   Again thanks to all who helped. This is a great list and in my case, a
real lifesaver!!!

73,de Bud WØHG


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Re: [drakelist] Help on this itel

[Lars E. Pettersson]

"Lars E. Pettersson" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
--
On Thu, 2005-02-24 at 03:11, JM wrote:
> Does anybody know the Drake <  BP7 PRE SELECTOR > ?

Do you have a photo of the inside?

73 de Lars, sm6rpz
-- 
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http://www.sm6rpz.se/
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