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XCOM radio and multiple input sources

 
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PostPosted: Sat Feb 18, 2006 2:23 am    Post subject: XCOM radio and multiple input sources Reply with quote

Dear Aeroelectric list members.
Attached is communication from me regarding the XCOM and how best to wire it into a somewhat robust system. Could anyone comment on the problem we are facing in attempting to properly utilize the rest of the wauipment in the panel with this radio?
Ron Patterson

Michael Coates <mcoates(at)mcp.com.au> wrote:
Hello Ron, thank you for your e-mail.

What you are asking is well beyond the ability of the XCOM radio, in fact I doubt you could find any audio panels that would prioritise incoming signals from six or seven imputs. You can however bundle all the inputs together by connecting all the earth's to one point and fitting a 4700 ohm resistor into the positive line from each source. This would stop each of the units trying to blow up the other unit, you would get everything coming in through the audio source together and the best of my knowledge there is no easy way to prioritise or mute these imputs other than turning the device off.

For example if you are listening to XM radio and didn't want to listen to your ipod then it would simply turn the ipod music off, if the XM radio was too loud then you would simply adjust the volume level on the XM radio device. It may be worth putting your inquiry onto one of the Avionics newsgroups where there are smarter people on me that may be able to help you with prioritising imputs. If there is anything else I can help you with please do not hesitate to contact me again. Kind regards Michael

Ron Patterson wrote:
Hello Michael,
Well, I'm into wiring up my RV-4 now and have run into some concrns of how to integrate the other audio producing avionics into the XCOM intercom. I'd like to ask some questions if I could so I get this right.

As far as I can tell, there is only one "input" ...Music Audio. Is this so? is it an input and not an output source?

Should I just wire everything (the Dynon AOA warning, the GPS 396 terrain warning and XM radio, the DVR 3000i audio checklist and recorder, the Narco NAV 122 with marker beacon and glideslope, plus my IPod) all into this one source???

Wouldn't I need some way to prioritize what audio takes precedence if there are mult iple signals coming in? Should I have a switch to select each unit individually as I need it?

I appreciate your help and ideas in working this out.
Ron Patterson

Michael Coates <mcoates(at)mcp.com.au> wrote:
What a load of crap ??? Where do some of these guys get this info ?? If there is a transmission coming in you can hear that and also have full intercom usage.... I have only ever once seen a system that cuts out the intercom in an old sigtronics and it was terrible, in busy airspace you could never talk.

You DONT need another intercom, you WONT have any problems hearing each other when there is a transmission breaking the radios squelch.... sometimes i wonder if you should really trust the wiring of your plane to these guys ???

Sounds like he just wants to sell you another intercom ??

Thanks Michael

Ron Patterson wrote:
Hello Michael,

You may recall I bought an XCOM from you at OSH this past month. I'm asking Approach Systems to wire up my panel. Cade at AS tells me that radios with an internal intercom require a switch to use the intercom, and that if the intercom is in use, no transmissions are heard by the pilot and co-pilot. This doesn't sound correct based on our discussions, but I'm confused. Could you advise us both?
Thanks
Ron Patterson

XCOM (planned intercom here)
Digitak
Altrak
Garmin 296
Flightcom DVR 300i
Dynon D10A with encoder
MicroAir 2000 SFL Transponder

***no seperate intercom planned....Cade advises to use a seperate intercom or cope with limitation listed above****

Michael Coates <mcoates(at)mcp.com.au> wrote:
hello ron, yes we are bringing radios etc... Please catch up with us there, Thanks.

Ron Patterson wrote:


Michael,

Will you be bringing some of the radios and intercoms to OSH this year? I was hoping to buy direct from you at the show.

Ron
:
Hello from LAX... probably in about 2 weeks from now, they
are ahead of schedule at the moment. Thanks Michael

---- Original message ----
Quote:
Date: Wed, 4 Aug 2004 08:41:03 -0700 (PDT)
From: Ron Patterson
Subject: Re: Thank you for your valued order
To: Michael Coates

Michael,

I would like to go forward with my order for the
XCOM.

when will you be shipping?

Thanks,

Ron Patterson

20885 Redwood Road #405

Castro Valley, CA 94546 USA


-- With regards, Michael Coates Company Director X-Air Australia Gold Coast, Australia. mailto:mcoates(at)mcp.com.au Main Web Site: http://www.mcp.com.au Sting Web Site: http://www.mcp.com.au/sti ng X-Air Web Site: http://www.xair.com.au XCOM Web Site: http://www.xcom760.com Sinus Web Site: http://www.mcp.com.au/sinus Galaxy Web Site: http://www.galaxysky.cz "Once you have flown, you will walk the earth with your eyes turned skyward, for there you have been, and there you long to return."
-- With regards, Michael Coates Company Director X-Air Australia Gold Coast, Australia. mailto:mcoates(at)mcp.com.au Main Web Site: http://www.mcp.com.au Sting Web Site: http://www.mcp.com.au/sting X-Air Web Site: http://www.xair.com.au XCOM Web Site: http://www.xcom760.com Sinus Web Site: http://www.mcp.com.au/sinus Galaxy Web Site: http://www.galaxysky.cz "Once you have flown, you will walk the earth with your eyes turned skyward, for there you have been, and there you long to return."

-- With regards, Michael Coates Company Director X-Air Australia Gold Coast, Australia. mailto:mcoates(at)mcp.com.au Main Web Site: http://www.mcp.com.au Sting Web Site: http://www.mcp.com.au/sting X-Air Web Site: http://www.xair.com.au XCOM Web Site: http://www.xcom760.com Sinus Web Site: http://www.mcp.com.au/sinus Galaxy Web Site: http://www.galaxysky.cz "Once you have flown, you will walk the earth with your eyes turned skyward, for there you have been, and there you long to return."


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