[Elecraft] MMTTY FSK
Mike
nf4l at nf4l.com
Sat Jun 12 15:17:07 EDT 2010
Not more difficult, just more equipment involved (and $$).... unless
you're doing it all from the K3, not using any external interface.
73, Mike NF4L
Bob Naumann wrote:
> Where did the idea that FSK is more difficult come from?
>
> FSK requires no setting of transmit audio levels or concerns about sound
> card settings - for transmission.
>
> To me, this cuts the difficulty in half.
>
> Using a RigExpert or MicroHam (or their equivalent) Interface it's basically
> automatic and requires no fiddling with levels.
>
> 100% FSK RTTY here. Zero problems.
>
> 73,
>
> Bob W5OV
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Mike
> Sent: Saturday, June 12, 2010 6:37 AM
> To: Brett Howard
> Cc: elecraft
> Subject: Re: [Elecraft] MMTTY FSK
>
> Fair enough.
>
> Mike NF4L
>
> Brett Howard wrote:
>
>> I'm one of those guys that is a glutton for punishment... To me the
>> fact that FSK is more complicated and I've not done it before is the
>> actual advantage. I do see FSK as a method that is slightly less prone
>> to TX distortions. I built my interface using opto couplers and then
>> put in a few jumpers to allow for several grounding situations. Turned
>> out that 100% disconnect between all grounds is working very well.
>>
>> ~Brett (N7MG)
>>
>> On Fri, 2010-06-11 at 19:28 -0400, Mike wrote:
>>
>>
>>> When I got my K3, I was hot to get it set up on FSK. Somebody here
>>> convinced me to try AFSK, and I was blown away by how simple it is, and
>>> less complicated to set up. AFAICT, FSK offers no advantage.
>>>
>>> 73, Mike NF4L
>>>
>>> Brett Howard wrote:
>>>
>>>
>>>> Ok so I've never done RTTY via true FSK only audio modes... I have to
>>>> put in a fence this weekend so I won't be able to play this weekend but
>>>> I'm trying to get ready for FD...
>>>>
>>>> So I've made an interface that consists of a couple opto couplers (one
>>>> for FSK and one for PTT)... I've got the radio all setup and shorting
>>>> the FSK_IN pin to GND makes the radio switch tones as it should...
>>>>
>>>> However I'm having issues getting MMTTY to open the COM port. I'm using
>>>> an FTDI based USB->RS232 converter. The MMTTY settings have the USB
>>>> button right there and they tell me to click on the last 3 options.
>>>> I've tried all 3 but in all 3 modes I get the unable to open COM3
>>>> error...
>>>>
>>>> I'm going to be googling and seeing if anyone else has had this issue
>>>> with me but I figured I'd pose here in the event someone here has
>>>> already run into this issue.
>>>>
>>>> ~Brett (N7MG)
>>>>
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>>>>
>>>>
>>>
>>>
>>
>>
>>
>
>
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