[GreenKeys] eBay speed converter

Mon, 17 Nov 2003 11:01:41 -0700

Hi All,

I was eyeing the TTY speed converter on eBay
(http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3059072113&category=
1502)

and wondered if any of you guys were bidding on it.  If not, I'll take a
stab at it. If so, good luck to you!

Regards,
Sherry Hydrick, KD7YEE 

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Sent: Monday, October 20, 2003 1:05 AM
To: [email protected]
Subject: GreenKeys digest, Vol 4 #269 - 1 msg

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Today's Topics:

   1. Re: frequency counter (Bob Camp)

--__--__--

Message: 1
Reply-To: "Bob Camp" <[email protected]>
From: "Bob Camp" <[email protected]>
To: <[email protected]>, <[email protected]>
Subject: Re: [GreenKeys] frequency counter
Date: Sun, 19 Oct 2003 18:01:51 -0400

Hi,

If you want to go the counter route rather than do it with a sound card
here
are a couple of ideas:

    HP 5334
    HP 5335
    HP 53131
    HP 53180

The first two show up in the $60 to $120 range depending on condition,
options, and location.

The second two are about 4X higher in price.

Why?

Well they all are what is known as a computing counter.

A normal counter running at one reading per second will tell you that
you
have a tone between 2000 Hz and 2001 Hz. That's a pretty slow rate and
not a
lot of accuracy. A piece of sound card software will do every bit as
well.

A computing counter does some magic inside and gives you a fixed number
of
digits, regardless of the input frequency. Of course the slower the
reading
rate the more digits you get.

The earlier computing counters would give you 8 or 9 digits at a one
reading
per second rate. The newer stuff will give you 10 or 12 digits at the
same
rate.

You can set a computing counter to a 10 readings per second rate (nice
and
fast) and still be getting seven digits of accuracy. Your tone will read
out
as 2000.0015 Hz or something like that.

Of course you may not *need* to know that you are .0015 Hz off on the
tone
....

    Take Care!

        Bob Camp
        KB8TQ

----- Original Message ----- 
From: <[email protected]>
To: <[email protected]>
Sent: Friday, October 17, 2003 10:48 AM
Subject: [GreenKeys] frequency counter

> I wish to soon buy a frequency counter to help set up several diffrent
Hal
ST-5's and ST-6's.It seems that in watching ebay there are dozens of
diffrent counters for sale such as 80mz, 512mz, ect.Exactly what should
I be
looking for? I have never used a counter before, but think it would also
be
nice to have so I can tell where my Heath HX-10 is set to and I never
know
where I am on my Swan 500cWayne WB0CTE
>
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