I agree if you do all those things wrong. But intelligent people (and
Radio Amateurs must be intelligent to pass the exams) will avoid
those pitfalls.
Even intelligent people can make mistakes or get sloppy. Witness the
terrible AFSK signal from W1AW on 40 meters a couple years ago. They
were doing everything right - AFSK to the modulator input of the Icom
756Pro, voltage divider, etc. - but the signal return lead broke and
nobody noticed. That left extreme overdrive plus hum/buzz over 3+ KHz
instead of 1 KHz like the "clicks" of the FT-1000 line.
Given the number of "plug and pray" users out there with hardware that
does not pay proper attention to power supply bypassing or regulating
the CODEC/op amp reference voltages, those who do not take necessary
care with common mode RFI issues, those who believe in "all knobs to
the right," those who never got the memo about disabling any audio
processing, etc., those who don't know to disable Windows Sounds or
stop listening to their streaming media whilst operating, the number
(chances) of really gross AFSK issues far exceeds the number of
"clicky" signals from the FT-1000 family of rigs.
If you're primarily a RTTY contest operator you may not hear those
other signals and the FT-1000 family is still very popular with
contesters so you will hear a higher percentage of FSK from that
source. However, if you spend significant time with PSK and JT modes
or listen to the pile-up of bigger DXpeditions, you will hear more
really gross AFSK signals than wider than necessary FSK signals.
Although I do not appreciate a "clicky" FT-1000MP 800 Hz away from me,
it is far less objectionable than the overdriven IC-706mkIIG with
processor cranked to the max, phase noise and carrier leakage.
73,
... Joe, W4TV
On 2015-04-01 5:17 AM, David G3YYD wrote:
Joe
I agree if you do all those things wrong. But intelligent people (and Radio
Amateurs must be intelligent to pass the exams) will avoid those pitfalls.
Using AFSK takes up a lot less of the band than using Yaesu FSK, which is
like the Yaesu CW bandwidth very wide.
I remember hearing about an FCC rule which says something along the lines
of: the transmission must occupy no more bandwidth than necessary for the
modulation type used and FT1000MP FSK for sure does not comply with that
rule.
73 David G3YYD
-----Original Message-----
From: RTTY [mailto:rtty-bounces@contesting.com] On Behalf Of Joe Subich,
W4TV
Sent: 31 March 2015 20:37
To: rtty@contesting.com
Subject: Re: [RTTY] Help for FT-1000-MP Mark V
> Or just use SSB with a resistive attenuator from the sound card to the >
microphone socket pin.
Which does horrible things if you run the sound card level too high in the
PC or forget to turn off the compressor in the rig. The big benefit of PKT
in the Yaesu rigs is that it makes sure the compressor is off and the mic
preamp is bypassed so you do not cause clipping *before* the
mic gain control. It also avoids external switching that can fail and
introduce hum/distortion.
73,
... Joe, W4TV
On 2015-03-31 4:29 PM, David G3YYD wrote:
Or just use SSB with a resistive attenuator from the sound card to the
microphone socket pin. Did that for years on my old FT1KMP. Used a
changeover switch to switch between microphone and attenuate audio
from the PC.PTT was done by using VOX.
73 David G3YYD
-----Original Message-----
From: RTTY [mailto:rtty-bounces@contesting.com] On Behalf Of Joe
Subich, W4TV
Sent: 31 March 2015 20:04
To: rtty@contesting.com
Subject: Re: [RTTY] Help for FT-1000-MP Mark V
My problem is understanding how you tell if her radio is set to AFSK
or FSK?
RTTY-L and RTTY-U are FSK. To operate AFSK with any of the Yaesu
transceivers one selects PKT mode. Prior to the FT-9000/FT-2000 PKT
was restricted to LSB mode which makes in difficult to use in some
digital modes (QPSK##, JT-65, JT9, MFSK#, etc.) but correct for AFSK
RTTY and usable (with a display difference) for BPSK##.
73,
... Joe, W4TV
On 2015-03-30 11:44 PM, Gary AL9A wrote:
Looking for some insight into RTTY settings for the Mark V. I am
trying to help Corliss AL1G upgrade her RTTY setup, but am unfamiliar
with her radio. She is in Anchorage and I am about 45 road miles away
from her QTH so we are doing this via email and phone calls.
She currently has a Rig Expert Standard as her interface, but is
going to upgrade to a microHAM MKII. She has MMTTY stand alone
running and we are trying to get her new upgraded version of WriteLog
to use either the MMTTY plug in or the XMMT.ocx. She has been
following the tips on AA5AU's web site, but she still is having
problems getting the radio to key up in WriteLog. At this point I am
unsure if she is transmitting AFSK or FSK.
I downloaded the manual for the Mark V and scanned through it looking
for subjects that included RTTY, AFSK and FSK. I've discovered that
the Mark V has two jacks on the back of the radio related to RTTY. A
5 pin DIN labeled PACKET is for AFSK, PSK and other digital modes. A
4 pin DIN is for FSK. My problem is understanding how you tell if her
radio is set to AFSK or FSK? The manual says to push the RTTY button
on the radio to select either RTTY LSB or RTTY USB. That's it. So
is this AFSK or FSK? Because of the LSB/USB choices it sounds like
the radio is going to transmit AFSK with either of these settings
through
the PACKET jack.
I can't find anything in the manual that specifically says how to set
it to do FSK. Is there a menu item buried somewhere that has to be
tweaked in order to get it to transmit FSK? Any guidance appreciated.
73,
Gary AL9A
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