[RTTY] Interface

Jurgen Geldhof list at on5mf.be
Tue Oct 11 23:58:23 PDT 2011


My setup is like this since a few days:

- All AFSK modes: TX and RX via Signalink USB
- RTTY: TX FSK via transistor/resistor circuit on RS232 and RX via 
Signalink USB

TRX is FT990 (for now).

I used AFSK for ages but got tired of having to readjust the audio level 
to get full power output.

Op 11/10/2011 20:03, David Levine schreef:
> I purchased a SignaLink USB and it worked (and still works) great. I now use
> a custom built FSK interface so I can take advantage of the tight filters on
> my radio needed when in a RTTY contest. For casual RTTY or even casual
> contesting you can use AFSK, especially if your radio provides nice filters
> in that mode.
>
> I also looked at a Rascal which can provide FSK, or at least on my radio it
> looked like it was supported. Check out the Rascal units at
> http://www.packetradio.com/catalog/ as they are in the same price range as
> the SignaLink USB unit.
>
> David - K2DSL
>
> On Tue, Oct 11, 2011 at 1:22 PM, Joe Subich, W4TV<lists at subich.com>  wrote:
>
>>
>>> That runs AFSK only, doesn't it?
>> Correct.  Signalink USB is a basic<$20 USB sound card ("headset
>> adapter") with a VOX circuit added for PTT.  It contains no serial
>> interface for rig control, FSK, CW or PTT.
>>
>> 73,
>>
>>     ... Joe, W4TV
>>
>>
>> On 10/11/2011 12:19 PM, Tom Osborne wrote:
>>> Hi Jay
>>>
>>> That runs AFSK only, doesn't it?  don't think it does FSK if I'm not
>>> mistaken.  73
>>> Tom W7WHY
>>>
>>>
>>>
>>> I use a Signalink USB by Tigertronics, Works Great.
>>>
>>>
>>>
>>> Jay N1FDX
>>>
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