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Is it possible to generate 1750Hz tone on HF with the K3 ?

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Clifford Hynds

Is it possible to generate 1750Hz tone on HF with the K3 ?

I just found there is a SSTV repeater in VK5 on 14236 and it requires a
1750Hz tone for access,

any way to do this ?

73
Cliff
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Lyle Johnson

Re: Is it possible to generate 1750Hz tone on HF with the K3 ?

Only in FM mode. it is one of the CTCSS tone choices.

73,

Lyle Kk7P

> I just found there is a SSTV repeater in VK5 on 14236 and it requires a
> 1750Hz tone for access,
>
> any way to do this ?

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Raymond Sills

Re: Is it possible to generate 1750Hz tone on HF with the K3 ?

IT's hard to figure how a 1750 "tone" would control a repeater on HF.
And, I doubt that the system is a true repeater. Possibly, it's a -re-
transmitter- where a signal could be received, recorded, and then
immediately re-transmitted. An unattended system like that would not
be permitted in the US, by maybe it's OK in VK-land.

It might be possible to have your computer (presuming a computer is
used to display the SSTV video) generate a 1750 tone for you. If you
have the DVR recorder module, you could record -that- tone into the
K3, and have it available to trigger the "repeater" station. Just a
thought.

73 de Ray
K2ULR

On Dec 12, 2012, at 11:36 PM, Lyle Johnson wrote:

> Only in FM mode. it is one of the CTCSS tone choices.
>
> 73,
>
> Lyle Kk7P
>
>> I just found there is a SSTV repeater in VK5 on 14236 and it
>> requires a
>> 1750Hz tone for access,
>>
>> any way to do this ?
>
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> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Please help support this email list: http://www.qsl.net/donate.html

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Pete Smith N4ZR

Re: Is it possible to generate 1750Hz tone on HF with the K3 ?

I *think* I recall reading about a freeware computer program that would
generate US touch-tones (CTCSS) with a standard sound card. Google
might be your friend here.

73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.

On 12/13/2012 8:45 AM, Ray Sills wrote:

> IT's hard to figure how a 1750 "tone" would control a repeater on HF.
> And, I doubt that the system is a true repeater. Possibly, it's a
> -re-transmitter- where a signal could be received, recorded, and then
> immediately re-transmitted. An unattended system like that would not
> be permitted in the US, by maybe it's OK in VK-land.
>
> It might be possible to have your computer (presuming a computer is
> used to display the SSTV video) generate a 1750 tone for you. If you
> have the DVR recorder module, you could record -that- tone into the
> K3, and have it available to trigger the "repeater" station. Just a
> thought.
>
> 73 de Ray
> K2ULR
>
> On Dec 12, 2012, at 11:36 PM, Lyle Johnson wrote:
>
>> Only in FM mode. it is one of the CTCSS tone choices.
>>
>> 73,
>>
>> Lyle Kk7P
>>
>>> I just found there is a SSTV repeater in VK5 on 14236 and it requires a
>>> 1750Hz tone for access,
>>>
>>> any way to do this ?
>>
>> ______________________________________________________________
>> Elecraft mailing list
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>> Please help support this email list: http://www.qsl.net/donate.html
>
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>

Iain MacDonnell - N6ML-2

Re: Is it possible to generate 1750Hz tone on HF with the K3 ?

Touch-tones are DTMF (dual-tone multi-frequency). CTCSS is Continuous
Tone-Coded Squelch System. They're quite different animals ;)

Audacity as a tone-generator function. I'd try that first.....
http://audacity.sf.net/

73,

~iain / N6ML

On Thu, Dec 13, 2012 at 6:09 AM, Pete Smith N4ZR <[hidden email]> wrote:

> I *think* I recall reading about a freeware computer program that would
> generate US touch-tones (CTCSS) with a standard sound card. Google might be
> your friend here.
>
> 73, Pete N4ZR
> Check out the Reverse Beacon Network at
> http://reversebeacon.net,
> blog at reversebeacon.blogspot.com.
> For spots, please go to your favorite
> ARC V6 or VE7CC DX cluster node.
>
>
> On 12/13/2012 8:45 AM, Ray Sills wrote:
>>
>> IT's hard to figure how a 1750 "tone" would control a repeater on HF.
>> And, I doubt that the system is a true repeater. Possibly, it's a
>> -re-transmitter- where a signal could be received, recorded, and then
>> immediately re-transmitted. An unattended system like that would not be
>> permitted in the US, by maybe it's OK in VK-land.
>>
>> It might be possible to have your computer (presuming a computer is used
>> to display the SSTV video) generate a 1750 tone for you. If you have the DVR
>> recorder module, you could record -that- tone into the K3, and have it
>> available to trigger the "repeater" station. Just a thought.
>>
>> 73 de Ray
>> K2ULR
>>
>> On Dec 12, 2012, at 11:36 PM, Lyle Johnson wrote:
>>
>>> Only in FM mode. it is one of the CTCSS tone choices.
>>>
>>> 73,
>>>
>>> Lyle Kk7P
>>>
>>>> I just found there is a SSTV repeater in VK5 on 14236 and it requires a
>>>> 1750Hz tone for access,
>>>>
>>>> any way to do this ?
>>>
>>>
>>> ______________________________________________________________
>>> 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
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
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>>
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>>
>
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Geoffrey Mackenzie-Kennedy-3

Re: Is it possible to generate 1750Hz tone on HF with the K3 ?

A free software program which will generate one audio tone, or two separate
audio tones, is TCube. This program can be found by Googling Tcube.

The frequency range covered by each tone generator is 1 Hz to 10 kHz. Mouse
clicks allow fine tuning in steps of 1 Hz. The output level of each
generator can be varied by approx 38 db. The program includes a spectrum
analyzer for use at audio.

An option provides outputs in quadrature.

73,

Geoff
LX2AO

On December 14, 2012 at 7:39 AM,
Iain macdonnell - N6ML - wrote:

<snip>

> Audacity as a tone-generator function. I'd try that first.....
> http://audacity.sf.net/

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Phil Kane-2

Re: Is it possible to generate 1750Hz tone on HF with the K3 ?

In reply to this post by Iain MacDonnell - N6ML-2

On 12/13/2012 10:39 PM, iain macdonnell - N6ML wrote:

> Touch-tones are DTMF (dual-tone multi-frequency). CTCSS is Continuous
> Tone-Coded Squelch System. They're quite different animals ;)

I may be stating the obvious, but IIRC a tone burst of 1750 Hz is a
standard way of turning a repeater/remote on in Europe. This is neither
DTMF nor CTCSS.

73 de K2ASP - Phil Kane
Elecraft K2/100 s/n 5402

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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