[ARC5] 10 meter BC-454

[Geoff]

Im also starting to wonder about the ferrite used. In many if not most 
radios a different (lower) permeability was used above roughly 12-14 mc as 
too high caused losses. It will also require more L in the coils so I dont 
know if youre up to more grief just to test a theory (-;

Carl


----- Original Message ----- 
From: "Kenneth G. Gordon" <kgordon2006 at frontier.com>
To: "Arc5 mail list" <arc5 at mailman.qth.net>
Sent: Tuesday, February 12, 2013 7:58 PM
Subject: [ARC5] 10 meter BC-454


> ALL the darned slugs are loose...
>
> After I "solidfied" the HFO coil, things are noticeably better, but still 
> far from perfect.
>
> Checking the mixer and RF coils, I find the slugs in those are loose also.
>
> Each coil has a small piece of fibrous material forced into the top of the 
> slug, but those have
> all lost their tension and are loose themselves.
>
> Doing as Mike Everett suggested, I hear and feel much looseness in the 
> entire coil assembly.
>
> More later.
>
> Ken W7EKB
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