[ARC5] R-27 alignment

Michael Hanz aaf-radio-1 at aafradio.org
Sat Feb 17 07:11:34 EST 2018


Brian is right on, John - the on-line alignment versions of NAVWEPS 
16-30ARC5-501 seem to be nice scans that have been cleaned up with 
automatic word processing tools and there are conversion artifacts in 
them.  You might do better with one of the ARC-5 HF manuals like AN 
16-30ARC5-2.  Here is the relevant information from Chapter 5.

           73,
  - Mike  KC4TOS



On 2/17/2018 1:45 AM, Brian wrote:
> Hello John
> My alignment manual is likewise silent on the settings. However from 
> other ACR-5 / SCR-274-N documents, for the R-27, C4F needs to be half 
> meshed and C4G needs to be fully meshed.
> In my experience, if those trimmers are not in the correct positions, 
> tracking and frequency range suffer.
> 73 de Brian, VK2GCE.
> *On*Saturday, February 17, 2018 11:11 AM, John said:
> I just went through an alignment for my R-27, went well.
> But I do have a question.  In the manual we find the following:
> "Before beginning alignment, check the positions of C4F and C4G
> and adjust them if necessary to the position shown in the table which 
> follows."
> A table follows, but positions for C4F and C4G are not given.
> Do I do anything to them?

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