If you find you need more detail I have both a 2K4 and a Halllicrafters
HT-33B and could shoot some close ups of those switches. It'd just take me
some time to get them posted on my site.
Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2
www.rogerhalstead.com
> Great helpful ideas!
>
> I checked out the ebay posting and saved the relevant
> pics for future reference.
>
> Will have to dig into the tuner to see where best to locate
> the switched caps.
>
> Thanks!
>
>> As an added note, the Henry HF amps use a series of plastic cams on a
>> shaft geared to the band switch.
>> There is a 2KD classic on e-bay that has several photos that show the
>> cams. Today is 18th and it should be there of a bit over 5 days. Watch
>> for line wrap on the link.
>> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=300092490733&ssPageName=ADME:B:SS:US:1
>>> There's also a cam on a shaft tied to a knob, or push-pull switch, disk
>>> of
>>> plesiglass with arm mounted on one side. In the case of the old B&W
>>> tank
>>> coils/band switch we tied the caps to the 80 meter position. Let your
>>> imigination be your guide.
>>>
>>> You are certain to give away some high-end tuning capability because
>>> the minimum capacitance of a big air variable will probably still
>>> present a fairly low reactance on upper HF.
>>>
> >>> Why not add some 250 or 500pF doorknob caps that can be switched in
> >>> in parallel with the current capacitors?
> >>>
> >>>> I'd like to improve performance on 80 & 160M
> >>>> QRO and read of one Ham changing the C1 240pf
> >>>> input series cap to 750pf and C2 114pf to 675pf.
>
> --
>
> Thanks! & 73, doc, KD4E
> Projects: ham-macguyver.bibleseven.com
> Personal: bibleseven.com/kd4e.html
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|