heath tuner Faq

[Keith Rowland]

The SA-2500 tuner, which is in daily use in my shack. is not a remote tuner.  It
sits right next to your transceiver in the shack.  What he is describing is
something that is operated from the control position, but which is located
(presumably) at the feed point, and which is tuned remotely from the control
position.  Heath may have made something like that, but I am not aware of it.
Although that's the ideal way to do it, because if the tuner is at the feed
point, it's a real tuner, and not just something that matches the transmitter
output to the shack end of the feedline, it's very difficult to accomplish in
real life, because of the physical problems attendant on having a tuning device
at the actual feedpoint of the antenna.

(Probably more than any body wanted to know!)

Keith



Randy Kaeding wrote:

> Karl:
>
> Yes, Heath did make an automatic antenna tuner. It was the model SA-2500 (I
> think). I have one at home somewhere in my achives. It used motors and each
> bacd could be preset to optimum with pots.
>
> Randy, K8TMK
> "One of the Hams (still) at Heathkit"
>
> -----Original Message-----
> From: Heathkit Owners and Collectors List
> [mailto:HEATH at LISTSERV.TEMPE.GOV]On Behalf Of Karl Schulte
> Sent: Tuesday, May 07, 2002 2:22 PM
> To: HEATH at LISTSERV.TEMPE.GOV
> Subject: heath tuner Faq
>
> Dear Heath Fans,
>
> Several emails have reached me about antenna tuner questions.  Heath made a
> remaote tuner, not an autotuner, long ago. I have one, unbuilt, in storage,
> that a few folks were interested in. But there was confusion as to type and
> definition of auto tuner, and why one would have or not have motors and/or
> microprocessors. Here is a quick info Faq on this.  I was part of Motorla
> MICOM HF-SSB team that invented the modern Microprocessor tuner (no motors,
> only relays and L/C elements in a sort of binary number arrangement. This
> was
> later imitated by SGC and a similar one was/is made by ICOM, both of which
> work very well in a HAm environment. On the other hand, long ago, Heath made
> an antenna tuner to match antennas out in the yard, by remote control, so
> you
> could be at your desk, key transmitter, watch your SWR meter and tune both L
> and C elements out in your yard while you were indoors by the control box,
> your rig and nice and warm. When SWR went down you would see it on swr
> bridge
> by radio. As it is in storage, I can't remember the model number, but when I
> dig down thru boxes and find it, it will be offered to the ham who spoke
> first, then to others if he declines.
> Hope this helps clear up the confusion.
>
> 73
>
> Karl
>
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