[1000mp] Different SWR at SSB and CW
Sergey
a1sy at yahoo.com
Tue Jun 8 21:46:06 EDT 2004
Well,it's getting funny.
Let me tell you that I'm Russian and my "Aaaaa" not the same as Americans.No offens-it's just
different langauge.It's very loud and I used it before without issues on my Yaesu 1000MP and
Kenwood 870.Never seen such difference.
So,Art and Steve you're trying to say that my TRCVR is fine,right?
73!
Sergey,KO5D
--- Steve <steve.w3sy at erols.com> wrote:
> Hey Art,
>
> I think I see the problem. The Tuneup Word International Team (TWIT) does
> not recognize "AaaaaOOOOO" as a legitimate Tuneup Word. If the operator
> attempts to tune up or test with "AaaaaOOOOO," results may be inconsistent.
>
> The Team suggests that SSB ops try one of the following Tuneup Words
> instead:
>
> 1) Oooooooohhhla, OOOOOOOooooooOOOOOOOoooooohhhla!
> 2) Aaaaaaauuudio.... AAAAAAAAUUUUUUdio.....
> 3) MMMMMbreeeeeaaaak mmmmmmmbreeeeeaaaaak broke....
> 4) Cambio! Cambio! Flacko! Flacko!
> 5) Helloooooooooooooooooooooooooooo radio!
> 7) Wheeeeeeeeeeeee.... wheeeeeeeee... <whistles>
> 7) Any lengthy combination of the above.
>
> For best results, use a busy frequency, or get within 1 kc of one.
>
> FYI, The Team is also trying to standardize CW Test Words. So far, "NST"
> seems to have found the most favor.
>
> Good day to YOU sir!
>
> 73 de Steve W3SY
>
> dit dit
>
> :-D
>
> --------------------------------------------
>
>
> ----- Original Message -----
> From: "Art Searle, W2NRA" <w2nra at birdsandbeacons.com>
> To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
> Sent: Tuesday, June 08, 2004 2:15 PM
> Subject: Re: [1000mp] Different SWR at SSB and CW
>
>
> > Let me get this straight. This group is having a serious discussion about
> > reading SWR in SSB by shouting "AaaaaOOOOO" into a microphone? And
> > wondering why SSB SWR is different than CW SWR? And because of this
> > something is supposed to be wrong with the rig? My question is why has
> this
> > discussion gone this far?
> >
> > And as a group we are encouraging the operating practice of shouting
> > "AaaaaOOOOO" into a microphone on the air? Yes, Sergey said he did his
> test
> > into a dummy load. Do you have any doubt that he does it on the air too?
> > Now I remember why I don't work this mode anymore.
> >
> > 73,
> >
> > Art
> > W2NRA
> > ----- Original Message -----
> > From: "Sergey" <a1sy at yahoo.com>
> > To: "Art Searle W2NRA" <w2nra at birdsandbeacons.com>; "All about Yaesu
> 1000mp"
> > <1000mp at mailman.qth.net>
> > Sent: Tuesday, June 08, 2004 1:03 AM
> > Subject: Re: [1000mp] Different SWR at SSB and CW
> >
> >
> > > Hi Art
> > > Well it's not a silly question.
> > > I have a Heil Pro-set plus and checking my SSB by loud "AaaaaOOOOO" and
> so
> > on...
> > > 73,Sergey
> > > KO5D
> > >
> > > --- Art Searle W2NRA <w2nra at birdsandbeacons.com> wrote:
> > > > Please excuse the silly question, I don't operate
> > > > the mode. How does one check SWR in SSB? Whistle
> > > > into the mic?
> > > >
> > > > 73,
> > > > Art
> > > > W2NRA
> > > > ----- Original Message -----
> > > > From: "Sergey" <a1sy at yahoo.com>
> > > > To: "All about Yaesu 1000mp"
> > > > <1000mp at mailman.qth.net>
> > > > Sent: Monday, June 07, 2004 8:05 PM
> > > > Subject: Re: [1000mp] Different SWR at SSB and CW
> > > >
> > > >
> > > > > Mike
> > > > > In experiment I did yesterday I connect my TRCVR
> > > > to the dummy load.
> > > > > I measure my SWR with TRCVR meter and in the
> > > > output of TRCVR I have a Daiwa SWR meter.
> > > > > Daiwa was connected to the 50 Ohm 200 Watts
> > > > dummy load.
> > > > > I undestand that some people saing go ahead and
> > > > just enjoy to be in the air.
> > > > > I think I have some problem with My SWR reading.
> > > > > The facts:
> > > > > 1.Doesn't metter if Tuner is ON or OFF - results
> > > > are the same.SSB SWR higher than CW for 0.5-0.7.
> > > > > 2.Test done on 50 Ohm dummy load,so I exclude
> > > > any influance of antenna.
> > > > > 3.I think it doesn't make sence to have
> > > > different SWR on the same Frequency.
> > > > >
> > > > > So,I seriously thinking to send it to Yaesu.
> > > > > I don't think it a good idea to work on SSB and
> > > > to see SWR around 2 and to verify every time that
> > > > > "I still have an antenna" by swithching to CW.
> > > > > I wrote this message to the forum to ask if
> > > > anybody else had the same issue and what was the
> > > > > solution.And bisides I wanted to hear more
> > > > opinions on that issue from others.
> > > > > Thanks,Sergey
> > > > > KO5D
> > > > > --- Mike Schatzberg
> > > > <cherokeehillfarm at earthlink.net> wrote:
> > > > > > Hello Sergey:
> > > > > >
> > > > > > Okay, interesting data. So, what is the SWR
> > > > at the coax connector that is
> > > > > > plugged into the SO 259 on the back of the
> > > > Mark V?
> > > > > >
> > > > > > Are you measuring the SWR externally after a
> > > > linear amplifier?
> > > > > >
> > > > > > If you are feeding your amplifier from your
> > > > Mark V, you should have a very
> > > > > > low SWR at the input to the amplifier. In
> > > > fact, you should not need to even
> > > > > > use the tuner at all, in this case. An
> > > > interconnecting cable between the
> > > > > > two units may be a problem.
> > > > > >
> > > > > > Reset your memories one more time, and use the
> > > > CW method to force the tuner
> > > > > > to achieve as close to 1:1 as possible.
> > > > > >
> > > > > > Clearly your Mark V thinks the SWR is high on
> > > > SSB, and is reducing the power
> > > > > > output accordingly, but will not reduce it on
> > > > CW at all, when the match is
> > > > > > 1:1.2 or less....
> > > > > >
> > > > > > If one more forced tuning does not solve the
> > > > problem, lower the overall SWR
> > > > > > of the antenna system as much as possible. Go
> > > > to 15 meters, and measure the
> > > > > > SWR of your antenna system, at the desired
> > > > frequency, and then carefully
> > > > > > start pruning back the coax, perhaps 6 inches
> > > > at a time, and re-evaluate the
> > > > > > SWR. While pruning, you can hold the coax
> > > > braid to the SO 259 connector
> > > > > > with a clothespin, to make contact.
> > > > > >
> > > > > > Reducing the overall SWR, prior to making the
> > > > tuner tune the system, should
> > > > > > help the overall situation.
> > > > > >
> > > > > > Finally, prior to doing any of this, check all
> > > > your jumper cables, and even
> > > > > > your antenna cable, into a dummy load, and
> > > > make sure they all read as close
> > > > > > to 1:1 as possible. You may have a bad cable
> > > > in your antenna system causing
> > > > > > you problems. A dummy load is a good
> > > > investment for trouble shooting, and
> > > > > > the Mark V should show 200 watts on all bands,
> > > > CW and SSB into the dummy
> > > > > > load with a good piece of coax, or a double
> > > > male connector.
> > > > > >
> > > > > > When you are sure that the rig is working into
> > > > the dummy load, begin the
> > > > > > pruning operation.
> > > > > >
> > > > > > Good luck and happy DXing,
> > > > > >
> > > > > > Mike
> > > > > > WB2AJI
> > > > > >
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > From: "Sergey" <a1sy at yahoo.com>
> > > > > > To: "All about Yaesu 1000mp"
> > > > <1000mp at mailman.qth.net>
> > > > > > Sent: Sunday, June 06, 2004 11:38 PM
> > > > > > Subject: Re: [1000mp] Different SWR at SSB and
> > > > CW
> > > > > >
> > > > > >
> > > > > > > Thanks Mike
> > > > > > > Here is another test i run today:
> > > > > > > Freq Mode Internal SWR Extenal SWR
> > > > Internal P meter External P
> > > > > > meter(PEP)
> > > > > > > 7100 CW 1 1.1
> > > > 200 200
> > > > > > > 7100 SSB 1.7 1
> > > > 200 100
> > > > > > > 14160 CW 1.2 1.2
> > > > 200 200
> > > > > > > 14160 SSB 1.6 1.1
> > > > 200 120
> > > > > > > 21207 CW 1.3 1.2
> > > > 200 160
> > > > > > > 21207 SSB 1.7 1
> > > > 200 85
> > > > > > >
> > > > > > > It looks like a Power has a different
> > > > reading as well.Not sure TRCVR read
> > > > > > PEP or AVG.In AVG it
> > > > > > > would read actually less.
> > > > > > > I made this test on 50 Ohm load and confused
> > > > with results.
> > > > > > > Not sure it's normal.I talked to my friend
> > > > that has a 1000MP Field and he
> > > > > > has a difference in
> > > > > > > about 0.1 between SWR and CW.
> > > > > > > Even that's OK,it's a little bit bother me
> > > > when I use SSB.Not sure I saw
> > > > > > it before.
> > > > > > > Thanks,Sergey
> > > > > > > KO5D
> > > > > > >
> > > > > > > --- Mike Schatzberg
> > > > <cherokeehillfarm at earthlink.net> wrote:
> > > > > > > > Hello Sergey:
> > > > > > > >
> > > > > > > > I do not pay any attention to the SSB SWR
> > > > really. When I find the
> > > > > > frequency
> > > > > > > > I wish to adjust the tuner on, I do it in
> > > > CW mode. I like to send a
> > > > > > series
> > > > > > > > of DITS at about 30 wpm, and then push and
> > > > hold the tuner button, to
> > > > > > force
> > > > > > > > the tuner to retune, and to memorize the
> > > > setting. This can be done at
> > > > > > > > relatively lower power, say about 30
> > > > watts.
> > > > > > > >
> > > > > > > > I find that even with s 1:1 SWR in CW
> > > > mode, the SWR meter while in SSB
> > > > > > still
> > > > > > > > reads upscale somewhat, for whatever
> > > > reason. The SWR reading in CW
> > > > > > agrees
> > > > > > > > with my Autek Research WM-1, and therefore
> > > > appears to be accurate.
> > > > > > > >
> > > > > > > > I just ignore the SSB reading. Of course,
> > > > if your Mark V decreases your
> > > > > > > > power output, after getting a perfect
> > > > match in CW, while transmitting on
> > > > > > > > SSB, you would have another issue. But I
> > > > never have seen this situation
> > > > > > > > occur, the radio always transmits with
> > > > full power capability after
> > > > > > adjusting
> > > > > > > > the tuner in this manner.
> > > > > > > >
> > > > > > > > Good luck and happy DXing,
> > > > > > > >
> > > > > > > > Mike
> > > > > > > > WB2AJI
> > > > > > > > ----- Original Message -----
> > > > > > > > From: <Sergey_Abrikosov at amat.com>
> > > > > > > > To: <1000mp at mailman.qth.net>
> > > > > > > > Sent: Sunday, June 06, 2004 5:38 PM
> > > > > > > > Subject: [1000mp] Different SWR at SSB and
> > > > CW
> > > > > > > >
> > > > > > > >
> > > > > > > > > Last week I found a higher than usual
> > > > SWR on 14MHZ during some
> > > > > > pile-up.
> > > > > > > > > The SWR was around 1.6 with some peaks
> > > > to 1.8.
> > > > > > > > > I use a dipole and thought that
> > > > something happened to my antena,but
> > > > > > after
> > > > > > > > > several experiments I found that I have
> > > > 1.2 SWR on the same frequency
> > > > > > in
> > > > > > > > CW
> > > > > > > > > mode.
> > > > > > > > > So,I tried 7,14,28 MHZ and had the same
> > > > issue: 1.1.-1.2 on CW and
> > > > > > 1.6-1.7
> > > > > > > > > on SSB on the same frequency.
> > > > > > > > > I tried to retune again my tuner but no
> > > > change in SWR so far.
> > > > > > > > > I did reset all memories and it didn't
> > > > help either.
> > > > > > > > > Did anybody had the same issue?
> > > > > > > > > Thanks,Sergey
> > > > > > > > > KO5D
> > > > > > > > >
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