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Would anyone be kind enough to point me to a wiring
diagram for a general aviation radio? I need to know the pinout configurations and voltage for the mic connection. Thank you and regards in advace! Gary |
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Gary --
No offense, but you are getting to be a PITA with this microphone stuff. Ask the question in ONE newsgroup and you will probably get the answer you want. Ask it in three or four and you are being a nuisance. Jim "Gary G" wrote in message ... Would anyone be kind enough to point me to a wiring diagram for a general aviation radio? I need to know the pinout configurations and voltage for the mic connection. Thank you and regards in advace! Gary |
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On Wed, 2 Nov 2005 09:09:27 -0800, "RST Engineering"
wrote: Gary -- No offense, but you are getting to be a PITA with this microphone stuff. Ask the question in ONE newsgroup and you will probably get the answer you want. Ask it in three or four and you are being a nuisance. Jim Have you answered him, Jim? You should be the one since you're the go to guy on radio work. Gary, has Jim answered your question? If not keep asking. If so, his answer is correct, look no further. "Gary G" wrote in message ... Would anyone be kind enough to point me to a wiring diagram for a general aviation radio? I need to know the pinout configurations and voltage for the mic connection. Thank you and regards in advace! Gary |
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Definitively, in RAH, where he started this post in the first place without
spamming it across four newsgroups. Jim Have you answered him, Jim? |
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Spamming my ass.
Let's see - help fellow pilots out . . . .ask a qeustion . . .SPAM DOES NOT COMPUTE! Whatever . . . Thanks to EVERYONE ELSE for your valuable input and offers to help. |
#6
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Howdy!
In article , Gary G wrote: Spamming my ass. Let's see - help fellow pilots out . . . .ask a qeustion . . .SPAM DOES NOT COMPUTE! OK. Let me try to help you out here. Usenet newsgroups each have a purpose -- a focus for the content that appears. It is rare for a topic to be genuinely applicable to more than one or two groups. One "right" group is the norm. Posting the same thing to a whole bunch of groups (cross posting) is a sign of either not understanding the above, or of trying to stir things up by getting people to respond in that same set of newsgroups leading to a bunch of swirl and fuss and bother. Posting your question in a bunch of places is what "DOES NOT COMPUTE". I'll accept a claim that you did it in ignorance of the conventions of Usenet... Once. [gratuitous slap snipped] yours, Michael -- Michael and MJ Houghton | Herveus d'Ormonde and Megan O'Donnelly | White Wolf and the Phoenix narrowwares Bowie, MD, USA | http://whitewolfandphoenix.com Proud member of the SCA Internet Whitewash Squad |
#7
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"RST Engineering" wrote:
Definitively, in RAH, where he started this post in the first place without spamming it across four newsgroups. Jim Have you answered him, Jim? Poor Jim...he's had a bug crossways up his arse for several years that I know of... -- -Gord. (use gordon in email) |
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On Thu, 03 Nov 2005 19:35:05 GMT, Gord Beaman
wrote: "RST Engineering" wrote: Definitively, in RAH, where he started this post in the first place without spamming it across four newsgroups. Jim Have you answered him, Jim? Poor Jim...he's had a bug crossways up his arse for several years that I know of... Yea, and when Arnold beat him in the California gubernatorial race, it really sent him over the edge ;-) |
#9
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With all due respect - why is it that you care about that.
If it doesn't concern you, why bother? I don't see that many people agree with you on that. Judge and Jury convened and departed in your mind already? No - I did not get an answer. Most thankful regards, Gary |
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On Thu, 03 Nov 2005 09:18:42 -0600, Gary G
wrote: With all due respect - why is it that you care about that. If it doesn't concern you, why bother? I don't see that many people agree with you on that. Judge and Jury convened and departed in your mind already? No - I did not get an answer. Most thankful regards, Gary "With all due respect" - perhaps after posting in multiple groups, you neglected to go back and check them all for "an answer". It sure looks like you got an answer to me, just not in RAM. If you think you'll get anywhere twisting Jim's tail, knock yourself out. The really, really funny thing is, he's probably the best 'group resource available for concise, accurate answers to GA avionics-related questions. see below; TC From RAH, not RAM On Wed, 02 Nov 2005 07:15:48 -0600, Gary G wrote: Would anyone be kind enough to point me to a wiring diagram for a general aviation radio? I need to know the pinout configurations and voltage for the mic connection. Thank you and regards in advace! Gary Same thread, also from RAH On Wed, 02 Nov 2005 14:30:17 GMT, Orval Fairbairn wrote: There is VERY low voltage involved -- #22 AWG (shielded) wire will suffice. There are three hookups to the jack: Mike Key, Mike Audio and Mike Ring. Ring goes to Ground Key goes to a switch, which grounds the key circuit. This activates the transmit relay in the radio. Mike Audio passes straight through to the radio audio circuit and carries the voice. This wire should be shielded, to reduce EM interference. IIRC, the audio is the tip of the jack; the key is the next position on the jack. Ground is the outer (long) part of the jack. Check with a circuit tester. Still in the same thread... On Wed, 2 Nov 2005 09:07:30 -0800, "RST Engineering" wrote: Not quite, Orval. From the leading edge of the male connector (microphone end as opposed to the aircraft end) the sections of the plug are tip, ring, and shell. Grounding the tip places the transceiver in the transmit mode; ungrounding it (open) leaves the transceiver in the receive mode. The ring carries the microphone audio (more later). The shell is airframe or chassis ground. The mic audio line coming from the transceiver is a current source that is intended to provide a 300 ohm mic element with about 10 mA. Generally this is a simple resistor fed from a quiet regulated supply inside the transceiver. I usually use the +10 volt supply and a 680 ohm resistor. The microphone circuit is designed to emulate a carbon microphone (variable resistance with audio) and will give somewhere between half a volt and a volt peak to peak with normal mic audio. Jim |
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