So, I developed about a year ago a Sirius radio interface because what is available out there to integrators sucks (having to emit a complicated IR code every time power dies is NOT integrator friendly) so I built an interface board that controls up to 4 sirius radio and you talk to it either over serial or ethernet, I dont use serial, but its a great debug tool. So, my question is, since I am getting to the board that hand etching these is getting bothersome.. Is there any interest in a product like this? If I can get commitments for 20 or so I can afford to get them prof made.

Pros and cons:
Pros:
4 radios with a single interface
SIMPLE protocol, all SAP commands are nicely tucked away, and instead you get pretty commands "$02,'D_TUNE:[tuner number];[channel number],$03"
Cheap to add radios and start with just 1 or 2
Doesnt have to be used on a 2 way device! 1 way RTI works perfectly!
Lots of other cool stuff!

Cons:
Separate components, (Controller + SC-H1*(1-4) )
multiple power connectors (1 for controller, 1 for each radio)(maybe I can change this, but later)
Others?

Now, if I get 20 or so orders this would be around $120 for the controller
and SC-H1s can be readily sourced for about 45usd

Compare to SRH2000 @ approx 200usd for 1 tuner + having to use an IR to emit the "go into passthrough" code


caveats:
the radio in sirius position must be the radio with the highest subscription (they can all be the same, but radio 1 MUST have the > or = the subscription of the others) full guide data (of non tuned channels) can only be requested from radio 1
the GET_TIME dst param is not correct (from sirius datastream) but the GMT time is spot on
most unsolicited data only comes from radio 1 (signal strength, time, data from non tuned channels)
unsolicited data of now playing channel comes from radio tuned to that station
when requesting subscribed channels the controller will have .75 of dead time before starting response, if unsolicited data is sent in this time, it is lost

I plan on etching another board this weekend to take pics, the final board will look pretty much 100% the same, just prettier, better ground plane, conformal coating and silk screening etc

Jimmy