[R-390] Antenna trimmer drawings

[Jordan Arndt]

Thanks Nick for that information...I'll be reviewing it as time allows.

One question of the bat however...The roll pin diameter dimension is shown as .062/.065. Is this a tolerance allowance or does it indicate that the pin itself is tapered...?

Tapering of the pin may explain at least some of the difficulties I've had removing the pin..

Thanks again an VY 73...Jordan VE6ZT
  ----- Original Message ----- 
  From: Nick England 
  To: Jordan Arndt ; Collins R-390 HF Receiver List 
  Sent: Thursday, September 12, 2024 5:49 AM
  Subject: Antenna trimmer drawings


  Oh, I created an actual searchable index to the drawings here
  https://www.navy-radio.com/rcvrs/r390a/drawings.htm


  A quick search for “trimmer” shows this assembly drawing
  https://www.navy-radio.com/rcvrs/r390a/drawings/17310-05/05-95-SM-C-248962-TRIMMER%20ASSY%20-%20R.F..pdf


  It references this capacitor drawing
  https://www.navy-radio.com/rcvrs/r390a/drawings/17310-04/04-80-SM-B-283234-CAPACITOR,%20VARIABLE.pdf


  There are also 3 other detail drawings showing shaft, bracket, and shield


  Nick England K4NYW
  www.navy-radio.com


  On Thu, Sep 12, 2024 at 6:29 AM Jordan Arndt <Outposter30 at shaw.ca> wrote:

    I am currently dealing with serious family issues leaving little time for 
    anything else, but I was wondering of anyone has found, or knows if those 
    drawing files contain any info regarding the Ant Trim assembly..?

    Given that the assembly appears to have been provided as a complete unit to 
    production, there might not be drawings regarding the assembly, but I 
    currently do not have time to investigate the now available drawings.

    Since I have been unable to fully disassemble the Ant Trim assembly because 
    I've been unable to remove the roll pin, I need to know what is inside the 
    assembly for spacers and if there might be a phenolic centering bushing on 
    the inside of the assembly...

    Any info would be greatly appreciated...

    73...Jordan VE6ZT

    ----- Original Message ----- 
    From: "Glenn Little WB4UIV" <glennmaillist at bellsouth.net>
    To: "jkharvie" <jkharvie at verizon.net>; <r-390 at mailman.qth.net>
    Sent: Wednesday, September 11, 2024 8:19 PM
    Subject: Re: [R-390] Meter Gaskets?


    > Tom M located the drawing package and they are hosted by Nick England.
    > The package appears very complete.
    > You could come close to building a R390A from the package.
    >
    > I just forwarded the information.
    >
    >
    > The pdf version of all 1000 drawings are now posted here -
    > https://www.navy-radio.com/rcvrs/r390a/drawings/
    > The categories are ones Tom used as labels
    >
    > Glenn