But isn't that the point? 

The KXn family ARE SDR, with I and Q outputs ready for excellent pandapter 
display with the PXn. 

Just want VHF/UHF instead of HF and it's all there. 

Andy, G8TQH

Sent from my iPhone

> On 25 May 2016, at 09:43, David Anderson via Elecraft 
> <[email protected]> wrote:
> 
> When I was active on the linear transponders of AO6 through to AO13 I never 
> used a satellite duplex radio, always separates. We had much better 
> satellites then, in decent orbits like AO-10. So Yaesu in particular brought 
> out lovely expensive duplex radios. Great! However then the linear sats 
> gradually died and were replaced by digital radio sats. Some FM one channel 
> toy sats, but nothing like the old wide linear transponders.
> 
> Only recently with FunCube and the Chinese Sats have we started to get linear 
> voice transponders back, but again in low fast moving orbits.
> 
> Many are now making use of SDR dongles or other SDR receivers as their 
> receiver for sats, because they have many advantages over the old way of just 
> being able to listen to your own receive channel. With an SDR and panoramic 
> can see all of the passband of the transponder or transponders on multiple 
> satellites at once. You can point and click on a signal of interest. Record 
> the whole pass and play it back and see who you missed in the very short 
> pass.   You can run the SDR on a tablet computer in the field, and have more 
> capability than your old FT-736R of olden days.
> 
> In short, until we have high orbit transponders on VHF UHF like AO-10/13 no 
> manufacturer is going to produce an FT-736R replacement. Any plans for a 
> geostationary satellite would not use VHF UHF, but microwave to get the 
> bandwidth required for a third of the world trying to access it at one time 
> all the time.
> 
> Things have moved on, a single duplex box isn't what is needed.  A 
> transmitter CAT coupled to an SDR panoramic receiver is much better. Point on 
> the screen on the signal you see and with Doppler corrected software set the 
> transmitter you have via CAT to the uplink frequency. It is also magnitudes 
> cheaper. 
> 
> 
> 73 from David GM4JJJ
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