| Author |
Message |
    
Flashgordon
Junior Member
Username: Flashgordon
Post Number: 12
Registered: 11-2005
| | Posted on Thursday, January 22, 2009 - 8:39 pm: | 
|
hi, does anyone know how to peak and tune
this radio? and can extra channels be added?
thanks,
the flash |
Dynamiteman
New member
Username: Dynamiteman
Post Number: 1
Registered: 2-2009
| | Posted on Friday, March 06, 2009 - 5:25 pm: |
|
hey flash on the 68 cut D-9 for modulation L-10/
L-9/L-8 for power. on 78 cut D-11 for modulation
L14/ for power. and yes channels can be added to both radios. |
Audio_man
Junior Member
Username: Audio_man
Post Number: 14
Registered: 12-2004
| | Posted on Thursday, April 02, 2009 - 10:26 am: |
|
how does one lower the dk, im getting 22W out of mine but from a 4W dk. |
Tech808
Moderator
Username: Tech808
Post Number: 16744
Registered: 8-2002
| | Posted on Thursday, April 02, 2009 - 1:55 pm: |
|
Copper Talk
» Open Forum
» Archived Messages
» 2004
» 08/01/2004 to 08/31/2004
» Uniden pc78
Uniden PC78
Modulation: Adjust VR-4
Power: Adjust: L14, L13, L12
Lon ~ Tech808
N9CEF ~ EN50mk
|
Flashgordon
Junior Member
Username: Flashgordon
Post Number: 13
Registered: 11-2005
| | Posted on Friday, April 03, 2009 - 9:15 pm: |
|
ok, and thanks,
how does one go about adding channels.
does anyone know how or where I could
look to find out how to do this? |
Jim_duncan
New member
Username: Jim_duncan
Post Number: 1
Registered: 8-2015
| | Posted on Saturday, August 22, 2015 - 8:38 pm: |
|
Greetings all, first post on this site.
I am trying to resurrect an old PC68 LTW. It has been in storage for many years, used to run a Palomar 175 I think. So it was tuned for this amp. No longer have the amp. Shows DK of 5 watts. No movement on the S meter when talking. No swing at all.
I just tuned up a Lil Wilson mag ant for this project... SWR around 1.3 through the mid sections, and got a response from a radio check the other day so I know it is transmitting somewhat.
Any suggestions on which pots to tune. I have found one post that gives the following...
Power Adjust L18 L17 L14
Modulation VR5
Squelch VR4
Signal Meter VR1
RF Meter VR7
another post above shows
Power L10 L9 L8....?
How do I achieve some swing ... all I have is a flat 5 watt output. Modulation or not.
Let the experiment begin.... if nobody has any input I will just dive in and slowly turn pots and record original starting positions of them and results. Slow and maddening I guess... so help me keep my sanity please.... insert smiley here...!! |
Rumblefish
Junior Member
Username: Rumblefish
Post Number: 48
Registered: 12-2002
| | Posted on Sunday, September 06, 2015 - 10:24 am: |
|
Adjust L10 for under 4 watts deadkey. VR5 will adjust the modulation. You should see more forward movement on the radios meter. let us know how you did with the radio. 3's.... |
