Clarifier??????
Tanya Wiertalla
on transmit. What are the advantages and disadvantages? Thanks in
advance!
John on joint ID
Brian Woodbury
M> Subject: Clarifier??????
M> Organization: Prodigy Services Company 1-800-PRODIGY
M> What is the clarifier and what is the point of
M> making it "open" and track
M> on transmit. What are the advantages and disadvantages? Thanks in
M> advance!
M>
M> John on joint ID
Hi John,
On SSB (Single-Sideband) the clarifier is used to "tune" in the other
station. A mis-tuned signal will make the other guy sound high or low pitched,
or...like Donald Duck!
The FCC in their infinite wisdom,declared that the clarifier could only
adjust the receive, not the transmit signal.
This works fine, if it's just two people talking...as the odds of both units
being adjusted perfectly to each other from the factory are nil. However, this
is VERY annoying when you get three, four, or five guys on one channel, and
everyone is a little "off". You spend a lot of time moving the clarifier, or,
live with Donald.....
The Clarifier mod, "opening a clarifier", let's the clarifier track on
receive AND transmit, and eliminates the problem, but (ain't there always a
but...), it creates another one: It's in direct violation of FCC rules (you
outta know that the Feds don't like to make life easy).
Probably, (my "Guest-A-mation") most (75%) of the clarifiers on SSB rigs
today are modified.
Oh yea, on some units, when this modification is done, they tend to drift a
little, some more than others.
'Nuff Said,
Woody
**************************************************************************
THE \/\/oody\/\/orld CB Gazette, THREE years and getting STRONGER!!
**************************************************************************
Brian Ellsworth
> >M> From: MBZ...@prodigy.com (Tanya Wiertalla)
> >M> Subject: Clarifier??????
>'Nuff Said,
>Woody
>
Woody's info was pretty much spot-on, except i've heard the term
"opening" the clarifier used to describe increasing the RANGE of the
clarifier. Typically the range is +/- 2K or so, "opening" might yield
+/- 5K or 6K...
-be
Raymond Rolison
>What is the clarifier and what is the point of making it "open" and track
>on transmit. What are the advantages and disadvantages? Thanks in
>advance!
> John on joint ID
>The clarifier knob is only useful on SSB. It gives the operator a fine tune control to bring another station on frequrncy in reference
> to the recieving radio. Since SSB communications is very narrow banded it's not uncommon for an incoming signal to be 200 HZ
> off of the recieve. And 200HZ is very noticable. (sounds like Donald Duck or a slow record) To unlock it and allow it to slide
>transmit means that you can adjust your own transmit frequency. If a operator has a frequency counter they could use this control
>to put their transmit signal on frequency. However whenever you move the clarifier to "dial" in another station kepp in mind that
> you also move your xmit frequency. Two stations with "unlocked" clarifiers could chase each other for a while trying to dial each
>other in. If the radio had seperate clarifiers for xmit and rcv it would things a lot easier for obvious reasons. It comes down to personal
>preference. Unlocking the clarifier in some radios makes it impossible to find the the right xmit position without a frequency counter.
> This is because of the particular circuitry in the radio. The Uniden Grant XL is a good example of this . It is impossible to to tune this
>radio to center the frequency on USB. (No adjustment inside for this.)
Tony Langdon
We'll return to Brian.W...@juge.com and MBZ...@prodigy.com's
discussion of Clarifier??????
Br> on receive AND transmit, and eliminates the problem, but (ain't there
Br> always a but...), it creates another one: It's in direct violation of
Br> FCC rules (you outta know that the Feds don't like to make life easy).
Br> Probably, (my "Guest-A-mation") most (75%) of the clarifiers on SSB
Br> rigs today are modified.
Br> Oh yea, on some units, when this modification is done, they tend to
Br> drift a little, some more than others.
I never understood why clarifiers should be fixed on transmit. As long
as the range is kept limited, there's no technical reason why this
should be so. Actually, some of the cheaper SSB rigs I've seen drifted
that much that I was _forced_ to unlock the clarifier on transmit, just
to make the rig useable on air! Not within the letter of the law, but
I'd say within the spirit, as the radios were stock in all other
aspects. The signal came out on frequency (after a tweak of the
clarifier :-) ) much more often after the mod. :-)
Listening to the locals on SSB, they're all over the place. I've lost
count of how many off frequency radios I've had to retune for friends to
make them useful on SSB. (only two of these involved unlocking the
clarifier, the rest were simple retunes).
... Put off procrastinating until a later time.
--
| Fidonet: Tony Langdon 3:632/367.2
| Internet: tl...@freeway.DIALix.oz.au
Jeff
THAT THEY ARE AT OP. TEMP. LOTS OF PEOPLE I KNOW START ADJUSTING
FREQ. BEFORE THE RADIO IS AT (PROPER TEMP).THIS MAKES FOR
FUNKY OFF FREQ. TX ALL THE TIME.
drg...@kilrah.iii.net
wrote:
>
>I never understood why clarifiers should be fixed on transmit. As long
>as the range is kept limited, there's no technical reason why this
>should be so. Actually, some of the cheaper SSB rigs I've seen drifted
>that much that I was _forced_ to unlock the clarifier on transmit, just
>to make the rig useable on air! Not within the letter of the law, but
>I'd say within the spirit, as the radios were stock in all other
>aspects. The signal came out on frequency (after a tweak of the
>clarifier :-) ) much more often after the mod. :-)
>
>Listening to the locals on SSB, they're all over the place. I've lost
>count of how many off frequency radios I've had to retune for friends to
>make them useful on SSB. (only two of these involved unlocking the
>clarifier, the rest were simple retunes).
>
>... Put off procrastinating until a later time.
The real speal of unlocked clarifiers is though, is if you unlock one,
it should be MATCHED PERFECTLY on both TX and RX, otherwise the
purpose is defeated....
-Dr. Grant