[OZAPRS] 300 baud TNC

Tue Jan 12 09:24:10 EST 2010

That is so true Ray, How silly of me :-D

Ben
vk5jfk

Ray Wells wrote:
> Skip a good red? Nothing is THAT important :-P
>
> Ray vk2tv
>
> Ben Lindner-VK5JFK wrote:
>> Just skip a few bottles of a quality Red and you should have one in a 
>> few weeks :-)
>>
>> cheers
>> Ben
>>
>> Scott Evans wrote:
>>   
>>> Hmm... I'm sure that not many are going to explore that path!... (but 
>>> a nice present non the less!)
>>>
>>> Oh and can someone donate one for my 40m HF gate! (Joking)
>>>
>>>
>>> On Mon, 2010-01-11 at 17:46 +1000, Jack Chomley wrote:
>>>     
>>>> Tim,
>>>>
>>>> One of the great features of the SCS DSP tracker is its ability to 
>>>> decode off frequency signals on HF. The older TNCs cannot do this at all.
>>>>
>>>> >From SCS Manual:
>>>>
>>>> *The DSPTNC supports the following Packet-Radio operating modes:*
>>>> Parameter Mode
>>>> 300 300 Bd AFSK (old HF-Packet-Radio standard)
>>>> TX center frequency default at 1700 Hz (1600 Hz “Space“, 1800 Hz “Mark“).
>>>> RX center frequency: 1700 Hz ±400 Hz, automatically tuning
>>>> R300 200/600 Bd Robust-Packet-Radio (RPR), automatic selection of speed.
>>>> TX center frequency fix at 1500 Hz
>>>> RX center frequency: 1500 Hz ±240 Hz, automatically tuning
>>>> UI-packets (APRS, Unproto) are transmitted with 200 Bd RPR.
>>>> R600 Like R300, but UI-packets (APRS, Unproto) are transmitted with 
>>>> 600 Bd RPR.
>>>> 1200 1200 Bd AFSK.
>>>> 9600 9600 Bd Direct-FSK (G3RUH).
>>>> 19200 19200 Bd Direct-FSK (G3RUH).
>>>>
>>>> *Highlights of the Modem-Implemtations in the DSPTNC:*
>>>> Generally very reliable and “flicker free” DCD achieved with special 
>>>> DCD algorithms on the
>>>> signal processor.
>>>> *New developed multi-detector for 300 Bd AFSK. The signal processor 
>>>> automatically*
>>>> *processes a frequency range of ±400 Hz looking for 300 Bd 
>>>> transmissions and receives all*
>>>> *detected signals in parallel.*Exact tuning by the user is not 
>>>> necessary any more as a perfect
>>>> tuning on the receiver side is always achieved automatically. If 
>>>> manual tuning of the RX frequency
>>>> is desired, the *DCD-LED*can be used for that purpose. It lights 
>>>> greenif the actually
>>>> received packet has a frequency error of less than +-40 Hz, otherwise 
>>>> itlightsred.
>>>> Special transmit- and receive filters for 1200 Bd AFSK, to avoid 
>>>> adjacent channel interference
>>>> and degradations by AC hum.
>>>> Adaptive DC-removal by the signal processor at 9600 und 19200 Bd 
>>>> Direct-FSK.
>>>>
>>>> Whilst these units are not cheap, they work very well as an HF IGATE 
>>>> unit, due to their off freq decode ability.
>>>>
>>>> 73,
>>>>
>>>> Jack VK4JRC
>>>>
>>>> At 04:38 PM 1/11/2010, you wrote:
>>>>       
>>>>> Thanks for the replies guys, I have two things in mind. 1) a 
>>>>> crossbanded HF to
>>>>> VHF tracker, I have now got the Codan NGT running with a TT3 and 
>>>>> would like to
>>>>> be able to use a portable tracker away from the vehicle, i have a 
>>>>> Kenwood HT
>>>>> with a gps and TT3 attached to it that goes great in a backpack. 
>>>>> Both the KAM
>>>>> and the SCS dsp seem to be able to do this.
>>>>> 2) Be able to use it at home to be able to "see" hf stations, 
>>>>> possibly even
>>>>> using it as a temporary/semi permenant 40m gate.
>>>>> The SCS dsp is definately an option as a new unit, possibly better 
>>>>> than the
>>>>> Kantronics ? They are both fairly close in pricing. The tracker 2 would
>>>>> definately do just fine for home but can it have 2 radios and baud 
>>>>> rates at the
>>>>> same time ? I will look it up ! I have also just stumbled accross a 
>>>>> KAM plus on
>>>>> ebay that finished yesterday and went for $ 143 us.
>>>>> Cheers Tim VK2HLT
>>>>>
>>>>> Quoting Phillip <zl2tze at yahoo.com.au>:
>>>>>
>>>>>         
>>>>>> Hi Tim,
>>>>>> Do you want this for mobile use or base station ?
>>>>>>
>>>>>> 73 Phillip
>>>>>> ZL2TZE
>>>>>>
>>>>>> _______________________________________________
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>>>>>>
>>>>>>           
>>>>>
>>>>>
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>>>>>         
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>>>>     
>>>>       
>>> --
>>> *Scott Evans VK7HSE*
>>> *Phone: +61362291658*
>>> *Mobile: +61417586157*
>>> *Skype: vk7hse*
>>> *scott at vk7hse.hobby-site.org <mailto:scott at vk7hse.hobby-site.org>*
>>> *http://www.vk7hse.hobby-site.org*
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>>>     
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>>   
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