[Hammarlund] RE;dumb tuning

Mon, 16 Sep 2002 18:38:32 -0700 (PDT)

There was a posting on this reflector a while back, where they were takling about the woman who
aligned the tuning capacitors in the SP-600. They had a test jig , with motors on it to sweep back
and forth as the tuning cap was "adjusted" for liniarity. This very experienced technician with
this test jig could align 4 SP-600 tuning caps in a day.

You can "guestimate" how long us mortals would take to get it right.

Rodney
VK2KTZ

--- Mike Taylor <[email protected]> wrote:
> some interesting discussion about mike mcoy's question on his hammarlund
> hq-180. what we're talking about here is what's called "tracking". in other
> words, the ability to set the tuning dial on any dial marker and that's the
> actual frequency you're tuned to. the hq-180 can do this. in a perfect
> world, we would all have singal generators that are 100% accurate which
> would make alignment simple. few of us do. so the crystal calibrator has to
> suffice during alignment and you need reliable reference points (like wwv).
> the highest band is difficult because there are so many dial marks spaced so
> close together. so mike, if your oscillator is even just 100khz off it can
> be impossible to figure out where you are. i've managed to get just about
> perfect dial tracking on both my hammarlunds, but it's tedious to do and
> truly a labor of love. i'd like to know how many other folks have managed to
> get nearly perfect tracking on their hammarlunds and how much of a pain it
> was to accomplish. 73's...mike [email protected]
> 
> 
> 
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