K2/100 rtty & microphones questions

[David Ashworth-2]

Hi to all.  Been reading about this rig and looking on the website, learned
a lot so far.  Looks like a neat rig, especially the receiver.  I have a
couple of questions that you might help me with.  For RTTY, does anyone use
this rig for contests and what is the safe level to run it in a contest
using RTTY?  I see that there are several levels to set the fan at.  Also
for RTTY, does this rig just work in AFSK, or can you make it work in FSK?
Another for RTTY, what add-on modules are you running or would you
recommend?  Now, for the microphones, I assume you need to get the SSB
option.  I have looked at the website, but wonder, is there a particular
spot on the website where the mikes and the jumper configurations that will
work with the K2/100 are displayed?  Thanks for your help, best regards,
Dave, NC6P.

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[Brian Mury-3]

On Sun, 2004-07-11 at 06:07 +0000, David Ashworth wrote:
> this rig for contests and what is the safe level to run it in a contest
> using RTTY?

The manual says that the maximum recommended power for PSK31 is 40W, and
for higher duty cycle modes such as MFSK it is 25W. I'm not sure what
the duty cycles are for those two modes - but 25W would probably be a
safe level.

> I see that there are several levels to set the fan at.

You can set it to off, low speed, or high speed. Regardless of the
setting, it will run at high speed when the heatsink is above 40 degrees
celsius.

> for RTTY, does this rig just work in AFSK, or can you make it work in FSK?

AFSK only.

> Now, for the microphones, I assume you need to get the SSB option.  

Yes. You will also need the SSB option for digital modes, including RTTY
(otherwise you have no way to do AFSK).

--
73, Brian
VE7NGR

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[K6TFZ]

In a message dated 11/7/2004 1:28:07 AM Pacific Standard Time, [hidden email]
writes:

> >for RTTY, does this rig just work in AFSK, or can you make it work in FSK?
>
> AFSK only.
>
It's technically AFSK because you are sending audio tones to the microphone
BUT because the carrier is suppressed and there is only one sideband, the
receiver sees it as FSK because only the carrier appears to be shifting.

Geoff, K6TFZ
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