Elecraft

K3/0 and RTTY

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k1uo-Larry

K3/0 and RTTY

I have a K3/0 and remote K3 setup using the RemoteRig boxes from Elecraft. SSB/CW is fine. When I switch the K3/0 to DATA mode and set up the onboard text decode and FSK to 45Bps . I get nothing but gibberish.. There is NO decoding possible for RTTY and the CW-RTTY does not key the remote unit either.

1: Does this feature even work when in the Remote configuration like this?

Also, the minute I switch to the DATA mode with the K3/0 , I get a ‘-S’ indicator just below the DATA Mode indicator and then under that is the ‘T’ indicating TEXT Mode is on.

2: What does the ‘-S’ mean? cant find it in the manual.
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wayne burdick

Re: K3/0 and RTTY

Administrator

Both RTTY and CW decode should work remotely. Use a narrow filter passband tune the signal in carefully using the CWT meter scale (pgs. 33 and 34 of the owner's manual). Decode accuracy is affected by noise, fading, and interference, but should work as long as the signal is correctly tuned in and has a high enough S/N ratio. CW decode is more difficult in the presence of noise and sloppy timing.

If you see the "-S" icon on the LCD, you are in "sync-data" mode, which is typically used for AMTOR or PACTOR (pg. 32). These modes require faster turn-around times, which the K3 facilitates by not switching crystal filters between transmit and receive.

The only way to get the K3 into sync-data mode is to assign the CONFIG:SYNC DT menu entry to a programmable function switch. You may have done this accidentally. To get it back out of this mode, temporarily assign this menu entry to a programmable switch, exit the menu, then press that switch. This should turn off the -S.

73,
Wayne
N6KR

On Feb 8, 2015, at 11:31 AM, "Larry - K1UO" <[hidden email]> wrote:

> I have a K3/0 and remote K3 setup using the RemoteRig boxes from Elecraft. SSB/CW is fine. When I switch the K3/0 to DATA mode and set up the onboard text decode and FSK to 45Bps . I get nothing but gibberish.. There is NO decoding possible for RTTY and the CW-RTTY does not key the remote unit either.
>
> 1: Does this feature even work when in the Remote configuration like this?
>
> Also, the minute I switch to the DATA mode with the K3/0 , I get a ‘-S’ indicator just below the DATA Mode indicator and then under that is the ‘T’ indicating TEXT Mode is on.
>
> 2: What does the ‘-S’ mean? cant find it in the manual.
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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k1uo-Larry

Re: K3/0 and RTTY

Got the CONFIG: SYNC DT off finally...Thanks so much. RX Signal levels
on RTTY are S9+..still gibberish decode over the Remote system?

-----Original Message-----
From: Wayne Burdick
Sent: Sunday, February 08, 2015 2:43 PM
To: Larry - K1UO
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K3/0 and RTTY

Both RTTY and CW decode should work remotely. Use a narrow filter passband
tune the signal in carefully using the CWT meter scale (pgs. 33 and 34 of
the owner's manual). Decode accuracy is affected by noise, fading, and
interference, but should work as long as the signal is correctly tuned in
and has a high enough S/N ratio. CW decode is more difficult in the presence
of noise and sloppy timing.

If you see the "-S" icon on the LCD, you are in "sync-data" mode, which is
typically used for AMTOR or PACTOR (pg. 32). These modes require faster
turn-around times, which the K3 facilitates by not switching crystal filters
between transmit and receive.

The only way to get the K3 into sync-data mode is to assign the CONFIG:SYNC
DT menu entry to a programmable function switch. You may have done this
accidentally. To get it back out of this mode, temporarily assign this menu
entry to a programmable switch, exit the menu, then press that switch. This
should turn off the -S.

73,
Wayne
N6KR

On Feb 8, 2015, at 11:31 AM, "Larry - K1UO" <[hidden email]> wrote:

> I have a K3/0 and remote K3 setup using the RemoteRig boxes from Elecraft.
> SSB/CW is fine. When I switch the K3/0 to DATA mode and set up the
> onboard text decode and FSK to 45Bps . I get nothing but gibberish..
> There is NO decoding possible for RTTY and the CW-RTTY does not key the
> remote unit either.
>
> 1: Does this feature even work when in the Remote configuration like
> this?
>
> Also, the minute I switch to the DATA mode with the K3/0 , I get a ‘-S’
> indicator just below the DATA Mode indicator and then under that is the ‘T’
> indicating TEXT Mode is on.
>
> 2: What does the ‘-S’ mean? cant find it in the manual.
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

k1uo-Larry

Re: K3/0 and RTTY

In reply to this post by k1uo-Larry

I should also mention we are using Fiber to the home for Inet here and 10MB
DSL link at the remote

Typical ping times are 50MS range and Latency range is usually 10-20 range
and Jitter 0-4 range usually 0 as it was a moment ago when tested.

Not sure why RTTY decode is a problem using the setup mentioned in the
manual.

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