[WriteLog] AFSK and a PTT Port?
Jerry Pixton
jpixton at shentel.net
Sun Apr 21 12:10:34 EDT 2013
Right on. I want to transmit just where I was calling CQ.
And although tuning RIT is nice on a radio that has a knob to twist, the
Flex has a little thumb wheel control thing that is extremely awkward to
use with the mouse. I figured out how to use the FlexControl knob when
running but since I still need to set a PTT with hardware on one "radio"
and I don't like the NET idea, I am back to MMTTY this morning.
If you have to use AFSK, this seems to be working just fine that way.
Jerry, W6IHG
On 4/21/2013 5:25 AM, Don Hill AA5AU wrote:
> I agree with Joe and Ed. However, I would still recommend that users not employ 2Tone in the main Rttyrite window when transmitting
> AFSK. Despite NET being limited to +/- 60 hz with 2Tone, you cannot guarantee that your transmit frequency will be what it was on
> your initial transmission to a station. On the second transmission, random noise or nearby QRM can cause AFC to change your
> frequency and NET will then having you transmitting off frequency from your initial transmission. I just think it's a poor operating
> practice.
>
> 73, Don AA5AU
>
> -----Original Message-----
> From: WriteLog [mailto:writelog-bounces at contesting.com] On Behalf Of Ed Muns
> Sent: Sunday, April 21, 2013 12:12 AM
> To: writelog at contesting.com
> Subject: Re: [WriteLog] AFSK and a PTT Port?
>
> I second all of Joe's comments. Furthermore, the 2Tone AFC and NET "locked on feature" can be effectively disabled by simply
> zero-beating the station you are working. If CQing, then zero-beat with RIT. If S&P, then zero-beat with the VFO. 2Tone provides
> a very efficient means to zero-beat with its dual pairs of yellow tone lines. Just line them up with your tuning and AFC/NET are
> irrelevant.
>
> Admittedly, I was initially dismayed with 2Tone's AFC being on all the time and WriteLog not able to turn off NET like N1MM Logger
> can. But, I have become comfortable based on how I operate, which is to always zero-beat the station I am working. The 2Tone AFC
> has an advantage in that it starts copying a signal once it is tuned within +/- 60 Hz and one can finish zero-beating while the
> caller is finishing their transmission.
>
> Thus, I've been using 2Tone as my main decoder because I have enough experience now to believe it is superior in more cases than
> either MMTTY or the DXP38. Since I use FSK transmission, NET doesn't matter and AFC is nullified by my zero-beat tuning that I've
> always done.
>
> Ed W0YK
>
>
>
> Jerry W6IHG wrote:
>>> I must use AFSK with the Flex and because of the NET issue I really
>>> don't want 2Tone in control of the transmitter.
>
> Joe W4TV wrote:
>>
>> NET is not a significant issue with 2Tone ...
>>
>> 2Tone is a completely different paradigm than MMTTY. First, 2Tone
>> limits AFC to +/- 60 Hz where MMTTY's AFC is 85, 125 or
>> 170 Hz depending on the value in the "Sweep" box on the AFC/ATC/PLL
>> tab (and
>> AFCSweep in any stored profiles). Second, 2Tone *does not* reset the
>> stored MARK frequency each time it transmits. MMTTY will move the
>> limit in receive, reset MARK (NET) on transmit and move the limit
>> again on the next receive cycle. However, once 2Tone has reached the
>> limit, (either + or - 60 Hz), the only direction it will move is back
>> toward the set point.
>>
>> The 2Tone paradigm is almost equivalent to FSK (and would be if Net
>> were off) ...
>>
>> While it would be nice if WriteLog were to automatically turn Net OFF
>> when calling CQ and turn it back on when the transmit frequency was
>> moved by more than 500 Hz or 1 KHz ("crank the VFO"), the alternative
>> is for Writelog users to e-mail G3YYD and ask that he replace the
>> "Set-up" button with a NET button. After all, Set-up is available on
>> the Menu at the top of the 2Tone Window which means the "Set-up"
>> button does nothing more than save *one* mouse click when changing
>> things that typically get changed once in an entire operating session
>> - if that
>> often!. Putting a NET (ON/OFF) button on the 2Tone window
>> would allow
>> the user to turn net on/off as they move from Run to S&P or vice
>> versa.
>
> _______________________________________________
> WriteLog mailing list
> WriteLog at contesting.com
> http://lists.contesting.com/mailman/listinfo/writelog
> WriteLog on the web: http://www.writelog.com/
>
> _______________________________________________
> WriteLog mailing list
> WriteLog at contesting.com
> http://lists.contesting.com/mailman/listinfo/writelog
> WriteLog on the web: http://www.writelog.com/
>
--
-----------------------------------------------
Dr. Jerry R. Pixton, PIXOS Designs
http://www.shentel.net/pixosdesigns/RadioTuner/
jpixton at shentel.net
-----------------------------------------------
More information about the WriteLog
mailing list