Re: [drakelist] T-4XC problem on CW

[Garey Barrell]

Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Check to see that the voltage on the pot wiper is varying.  I don't 
remember the values, but as I recall there is a series resistor to 
convert it to a current source.  I'm assuming that you have good carrier 
suppression in SSB?


[EMAIL PROTECTED] wrote:
OK Garey the ground is there. The pots both check about 520K ohms 
across the full windings and checking at the center terminal, the back 
pot checks 0-520K ohms. The front pot nearest the panel checks 0-15K 
ohms across the full range. I must have a problem somewhere else.
 
Terry, 
W8NJR
 
 
In a message dated 4/4/2008 11:11:24 A.M. Eastern Daylight Time, 
[EMAIL PROTECTED] writes:



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

On CW the GAIN control varies a DC bias on the Balanced Modulator
diodes
to "unbalance" them.  Perhaps that section of the GAIN control has
lost
it's ground.  That section isn't used for any other function.

73, Garey - K4OAH
St. Charles, IL

[EMAIL PROTECTED] wrote:
> I have a T-4XC that works fine on SSB but when I switch to CW
and key
> the transmitter, It has full or a lot of drive applied and the gain
> control has no effect or control over the drive. Has anyone out
there
> run  into this before? I thought I would check before I start
looking
> for the problem.
> 
> 
   Thanks,
> 
   Terry

> W8NJR
> 
>

>

--
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
--





Planning your summer road trip? Check out AOL Travel Guides 
.


--
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] T-4XC problem on CW

[W8NJR]

OK Garey the ground is there. The pots both check about 520K ohms across  the 
full windings and checking at the center terminal, the back pot checks  
0-520K ohms. The front pot nearest the panel checks 0-15K ohms across the full  
range. I must have a problem somewhere else.
 
Terry,  W8NJR
 
 
 
In a message dated 4/4/2008 11:11:24 A.M. Eastern Daylight Time,  
[EMAIL PROTECTED] writes:


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

On CW the GAIN control varies a DC bias on the Balanced Modulator  diodes 
to "unbalance" them.  Perhaps that section of the GAIN control  has lost 
it's ground.  That section isn't used for any other  function.

73, Garey - K4OAH
St. Charles, IL

[EMAIL PROTECTED]  wrote:
> I have a T-4XC that works fine on SSB but when I switch to CW  and key 
> the transmitter, It has full or a lot of drive applied and  the gain 
> control has no effect or control over the drive. Has anyone  out there 
> run  into this before? I thought I would check before  I start looking 
> for the problem.
>  
>Thanks,
>  Terry 
> W8NJR
>   
>
>

--
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
--





**Planning your summer road trip? Check out AOL Travel Guides.
  (http://travel.aol.com/travel-guide/united-states?ncid=aoltrv000316)

Re: [drakelist] T-4XC problem on CW

[W8NJR]

I will look and and see Garey. I'll let you know. I have been studying the  
circuit and just getting familiar with it. 
Terry
 
 
 
In a message dated 4/4/2008 11:11:24 A.M. Eastern Daylight Time,  
[EMAIL PROTECTED] writes:


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

On CW the GAIN control varies a DC bias on the Balanced Modulator  diodes 
to "unbalance" them.  Perhaps that section of the GAIN control  has lost 
it's ground.  That section isn't used for any other  function.

73, Garey - K4OAH
St. Charles, IL

[EMAIL PROTECTED]  wrote:
> I have a T-4XC that works fine on SSB but when I switch to CW  and key 
> the transmitter, It has full or a lot of drive applied and  the gain 
> control has no effect or control over the drive. Has anyone  out there 
> run  into this before? I thought I would check before  I start looking 
> for the problem.
>  
>Thanks,
>  Terry 
> W8NJR
>   
>
>

--
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
--





**Planning your summer road trip? Check out AOL Travel Guides.
  (http://travel.aol.com/travel-guide/united-states?ncid=aoltrv000316)

Re: [drakelist] T-4XC problem on CW

[Garey Barrell]

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

On CW the GAIN control varies a DC bias on the Balanced Modulator diodes 
to "unbalance" them.  Perhaps that section of the GAIN control has lost 
it's ground.  That section isn't used for any other function.


73, Garey - K4OAH
St. Charles, IL

[EMAIL PROTECTED] wrote:
I have a T-4XC that works fine on SSB but when I switch to CW and key 
the transmitter, It has full or a lot of drive applied and the gain 
control has no effect or control over the drive. Has anyone out there 
run  into this before? I thought I would check before I start looking 
for the problem.
 
Thanks,
Terry 
W8NJR
 





--
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
--

[drakelist] T-4XC problem on CW

[W8NJR]

I have a T-4XC that works fine on SSB but when I switch to CW and key the  
transmitter, It has full or a lot of drive applied and the gain control has no  
effect or control over the drive. Has anyone out there run  into this  before? 
I thought I would check before I start looking for the problem.
 
Thanks,
  
  Terry  W8NJR
 



**Planning your summer road trip? Check out AOL Travel Guides.
  (http://travel.aol.com/travel-guide/united-states?ncid=aoltrv000316)

Re: [drakelist] TR7 Knobs

[Ron Wagner]

Ron Wagner <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Not tried the 7 line, but for my 4 line I used White Out (the "toxic" 
stuff, not the fake water based stuff).  Excess can be wiped off with 
finger if needed prior to drying.  Dried can be "chipped" off with your 
finger nail.  I even put lines on my HR2600 knobs which only had "slotted" 
knobs before.  Mine has lasted over 15 years on the 4 line.


73,
Ron WD8SBB


On Thu, 3 Apr 2008, Bill Carpenter wrote:



"Bill Carpenter" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
The white lines and dots on my TR7 knobs have become almost invisible.  Has 
anyone re-painted these and if so what paint did you use?


73,

Bill  NZ0T 



--
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
--



--
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
--