[Boatanchors] NC 81X

[StephenTetorka at cs.com]

Hello Al:

Nice to hear from ya.

Good advice on the headphone jack.
Last thing I did last night was swipe the contacts with my trusty endodontist files.
Then, I went to have my 'nightcap'.

I spent about 3 hours replacing 12 of the original Sprague wax paper caps.
Then, took a pause and put them to my capacitance meter to see how many were NG.

Zero.
ALL were right on for capacitance...0.1 mfd or 0.01 as per.

That's when I decided to leave the remaining 5 or 6 in there.

Did replace the electolytics.

Got the schematic from the bama mirror site.
What a great resource.

Need the manual for alignment etc like what the 'phasing' control phases?
Is that the same as the antenna tune control?

Have to say I'm weak on receiving fixuptechnology.
Better understanding the homebrew 813 amp I'm restoring.

Please consider me in "Receiver 102."

Regards,
Steve


Al Klase <skywaves at webex.net> wrote:

>Steve,
>
>Control to the right of the tuning knob is AUDIO GAIN and 
>power switch.  Control to the left is RF GAIN and PLATE 
>switch (Switch in series with the 25Z5 rectifier plates 
>kills B+ to mute receiver).
>
>I suspect you have a problem with the phone jack which 
>intrrupts the 25L6 grid circuit when phones are plugged in. 
>  Exercise the jack.
>
>There's a schematic and parts list on BAMA under NC-80.  The 
>usual guys will sell you a manual.
>
>Recommend you recap a radio this old.
>
>
>73,
>Al
>
>StephenTetorka at cs.com wrote:
>
>> Hi all:
>> 
>> I'm in the process of firing up an NC 81X.
>> So far, I only get speaker output via a test signal generator onto the 25L6 grid.
>> 
>> The unit has two pot controls: "plate - on/control" and "line - on/control".
>> 
>
>-- 
>Al Klase - N3FRQ
>skywaves at webex.net
>Flemington, NJ 08822
>Web Page:  http://www.webex.net/~skywaves/home.htm
>