Randy or Sherry Guttery wrote:
Chuck Harris wrote:

If you are going to couch the question that way, the answer is
none.

This was in response to the previous discussion of the fact there is no
standards for S unit meters (i.e. there are reports of S Units being
anywhere from 1-6db/S unit - with 6db having been a proposed (but
failed) standard - and 5db/S unit seeming to be common in modern (SSB)
rigs.

This is bad, but I agree.

Someone mentioned that military gear using "S meters" were calibrated to
6dB/S unit. I'm not familiar (in spite of being married to a boatanchor
collector with a fair number of pieces of gear) with any "native" mil
gear with S meters - which you pretty much confirm above.

That was me.

Since that individual noted mil gear with calibrated S meters - I was
exploring that question. As I noted - it wouldn't surprise me to learn
that some modern (post 1980) mil gear has S meters...

For a while (post 1980) they appeared on some of the gear that was intended
for use by relatively untrained operators, but for the most part it wasn't
widespread. Mostly because gear that was intended for skilled users (and
I put the R-390 in that category) may as well use the more accurate dB
metering, and gear that was intended for unskilled users pretty much didn't
have metering at all (like most field radios).

Hence the "couched" question.

There is a 6 dB mil standard for the things, and I'll dig it up because
I have it somewhere in my office. The fact that it doesn't get used much
if at all is quite true, though.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

Scott Dorsey wrote:

For a while (post 1980) they appeared on some of the gear that was intended
for use by relatively untrained operators, but for the most part it wasn't
widespread. Mostly because gear that was intended for skilled users (and
I put the R-390 in that category) may as well use the more accurate dB
metering, and gear that was intended for unskilled users pretty much didn't
have metering at all (like most field radios).

I had a feeling there might be a few "latter day" examples of mil
S-meters - but, yes I quite agree - the few BA receivers I'm familiar
with that have meters (390 series, WWR-2, etc.) are dB while the vast
majority of BA receivers don't have any signal strength meter at all
(ARC 5, 348, 654, and so on).

There is a 6 dB mil standard for the things, and I'll dig it up because
I have it somewhere in my office. The fact that it doesn't get used much
if at all is quite true, though.

That's what I'm interested in - I did a quick (very quick) scan through
several of the manuals I have here (Navy Electronics Tech 3 & 2 parts 1
& 2; Basic Electronics; EIMB Reference Data, EIMB Communications
(incomplete); EIMB TM&P)- and while just about every manner of dB is
covered- I didn't spot a single mention of S-Units. I must note,
however - they are from my time in the Navy - which was the 1970s- and
that's why I have allowed that S-units may have come into common use in
the military in sometime since 1980.

best regards...
--
randy guttery

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