[Elecraft] K3 Digital audio out ?

Julian, G4ILO julian.g4ilo at gmail.com
Fri Sep 5 09:11:00 EDT 2008



DH2SE wrote:
> 
> Julian,
> 
> I have the same problem using the K3 wireless around the house e.g. while
> sitting in the garden. But I need also the possibility to use the K3 from
> far away. Bluetooth is suitable if you use a Jabra A-210 Module for the
> audio transmission directly to a headset and a second Bluetooth dongle in
> combination w/ a serial to usb converter for the data to a PC / notebook
> computer. I used this already but unfortunately, the range of Bluetooth
> Class 2 or 3 gadgets is not very nice (less than 30 ft.). But there is a
> supplier in Germany for a Bluetooth modul which supports Class 1, I'm
> working on it.
> 

Thanks for the suggestion. The Jabra module might be a workable solution for
me, although 30 feet range will barely reach the end of even our small
garden. I could use remote desktop to access the rig control application, so
I wouldn't need Bluetooth serial, though I do have a couple of Bluetooth
serial devices that I bought on eBay on the off-chance they would come in
handy for something like this. Is there a Bluetooth headset that has
headphones and a boom mic, or must you use one of those small mobile phone
headsets?



> I do have access to a embedded system that comes with a ARM7 µController.
> It should be possible to run an embedded Linux at that device. It would
> have all necessary ports (2x RS-232, USB (the protocol is already
> implemented), Ethernet (the protocol is already implemented), native
> UART's). The size of that board is only 800 x 300 mm (31,5 x 11,8 inch.).
> The price is less than 100 €. That should fit into the K3 with no problem.
> The only thing is: I do not have the time to develop it using Linux or a
> custom made firmware :-( Getting retiered is estimated by the year 2038.
> 

With what the current economic climate is doing to my pension savings I
don't have any current estimate for retirement. :( I don't have time to
develop such a project either at the moment. If I did, I'd go for an
external box that plugs in to the RS-232 port and line in and out jacks on
the radio side, and ethernet on the other. You'd need an on-board sound
card, of course, to digitise the audio.

Using Hamlib for rig control, the device could work with any radio, so the
market for it would be much bigger than just the K3. I'd have thought such a
product would be commercially viable, wouldn't you?

-----
Julian, G4ILO. K2 #392  K3 #222.
http://www.g4ilo.com/ G4ILO's Shack   http://www.ham-directory.com/ Ham
Directory    http://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3 
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