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
>> _______________________________________________
>> RTTY mailing list
>> RTTY@contesting.com
>> http://lists.contesting.com/mailman/listinfo/rtty
>>
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