[SOC] complaining

[D.J.J. Ring, Jr.]

Mike,

I think you have to cut some people some slack.  For many years before I
was instructed, I thought that military sets such as the ARC-5 had chirp.
 I was wrong.  Most do not.

Todays radio transmitters all have a T9X tone.  The RST has the T portion
going up to 9 and there are modifiers for C, Chirp, K, Key clicks, and X,
for Crystal control (Xtal control) sounding.  So today's radios are 339X,
579X, 599X but most don't put the X down anymore.

The ARC-5 usually doesn't have a chirp as much as it has a frequency swing
as the voltage changes.

I contacted an Eastern European, probably Ukraine, and I gave him a 479C
and I listened to his signal more closely, he didn't have a chirp, there
was no instability on the start of the transmitter, but a continuing change
in tone as the frequency generating oscillator stabilized.  Master
Oscillator Power Amplifier circuits like the ARC-5 almost always had this
type of instability, that's why we had the X in the RST.  If you had the X
you had gotten your transmitter working so well that it sounded just like a
crystal controlled set.

It is possible to have an ARC-5 chirp but that can be fixed:
http://radios4fun.net/index.php?p=1_19_Stinson-s-ARC-5-Tx-Notes

73

David N1EA


On Sun, Aug 4, 2013 at 8:02 PM, <w7dra at juno.com> wrote:

> you know this list is  a good place to complain about anything......i get
> on the air (80m mainly rock bound now) because if i use a VFO (arc5 or
> homebrew depending) everybody complains that i am drifting or have a
> chirp or something that doesn't matter to me in the least.
>
> and they wont just say "569C' or something like that they go on  and on
> and on about what my signal sounds like and that i should send my rig in
> to get it fixed by a professional.
>
> you dont think i know what my signal sounds like? hey, if i get most of
> my power supply energy out on somewhat the VFO frequency or a harmonic i
> consider myself lucky
>
> arg
>
> mike w7dra
>