[TowerTalk] 40/30 SteppIR
Joe Subich, K4IK
k4ik at subich.com
Thu Oct 7 20:08:55 EDT 2004
> Could one not (eventually) obtain a "replacement" DE for a
> MonstIR? Perhaps that could replace a 3L or 4L DE?
It might be possible to substitute a MonstIR DE into the 3L
yagi (20-6) but the 22:50 Ohm un-un would be a problem on
40 and 30 meters. Mike and Jim would need to design a relay
switching arrangement to take out the un-un on 40 and 30 where
the antenna would perform like a rotary dipole.
> With a custom arrangement using replacement components, I'd
> guess that the problem would be programming the controller,
> but the possibility might eventually develop to "roll your
> own", from a dipole to a long-boom multi-element yagi.
Reprogramming the existing controller isn't a big deal if one
has access to the ATMEL tools. The issues are a limit of five
stepper motor drivers and no relay outputs to handle impedance
changing.
73,
... Joe, K4IK
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