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#11
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Transponder Goes Up To 8
On Thu, 20 Dec 2007 06:34:11 -0800 (PST), Mike Granby
wrote in : Here's the eBay link... http://cgi.ebay.com/ebaymotors/ws/eB...m=230199151135 That indicates that it's a: GABLES ENGINEERING, MOD. NO. G-1884C There's a link to Gables products he http://www.gableseng.com/rotary.asp but I don't see the G-1884C among them. However, you can request a password he http://www.gableseng.com/dds.asp to view the on-line documentation for their products. Surely the eight digits would be explained there. Also interesting is the 1884C's Volume control! |
#12
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Transponder Goes Up To 8
On Dec 20, 11:26 am, Larry Dighera wrote: Also interesting is the 1884C's Volume control! It's also a control head for a MB receiver. That control is labelled MARKER, and also selects senstivity. |
#13
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Transponder Goes Up To 8
"Mike Granby" wrote in message ... On Dec 20, 3:31 am, Larry Dighera wrote: Decade electrical switches are easier/ cheaper to procure than octal switches? That would explain 0-9, but these are 0-8. You've Probably stumbled upon the top secret "Chemtrail" activator. Say no more about it. Al G |
#14
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Transponder Goes Up To 8
Larry Dighera wrote:
On Thu, 20 Dec 2007 06:34:11 -0800 (PST), Mike Granby wrote in : Here's the eBay link... http://cgi.ebay.com/ebaymotors/ws/eB...m=230199151135 That indicates that it's a: GABLES ENGINEERING, MOD. NO. G-1884C There's a link to Gables products he http://www.gableseng.com/rotary.asp but I don't see the G-1884C among them. However, you can request a password he http://www.gableseng.com/dds.asp to view the on-line documentation for their products. Surely the eight digits would be explained there. Also interesting is the 1884C's Volume control! From the same seller. http://cgi.ebay.com/P-3-Aircraft-Pil...QQcmdZViewItem That would be fun just to stick into the empty space on the panel of a homebuilt. |
#15
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Transponder Goes Up To 8
On Dec 20, 9:34 am, Mike Granby wrote:
Here's the eBay link... http://cgi.ebay.com/ebaymotors/ws/eB...m&item=2301991... Hmmm... An "ATC Control Panel" eh? I didn't know those folks were controllable. Guess I oughta review Part 91 again... |
#16
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Transponder Goes Up To 8
Larry Dighera wrote in
: On 20 Dec 2007 12:41:47 GMT, Judah wrote in : Larry Dighera wrote in m: On Wed, 19 Dec 2007 11:51:33 -0800 (PST), Mike Granby wrote in : I find myself holding a 747 transponder control head that I bought on eBay as a toy for the kids. But, with echos of Spinal Tap's guitarist in my head, I notice that the selector knobs allow the digits 0 thru 8 to be selected. What gives? Decade electrical switches are easier/cheaper to procure than octal switches? Wouldn't a Decimal switch go 0-9? Umm... Good point. Oh well.... Perhaps the new New York Airspace Czar has the answer. :-) I think I have it figured out... It's actually a USB-connectible transponder for SIMs. In the Sim world, the kneeboard lists the following emergency squawk codes: 7500 - Hijack 7600 - Lost Comm 7700 - General Emergency 7777 - Military Intercept 8500 - Mom came home 8600 - MP3 player too loud 8700 - Had to pee 8888 - ATF is here doing a drug/alcohol/gun raid. |
#17
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Transponder Goes Up To 8
Here's the answer from a very kind soul at Gables... The G1884 series started in 1965. I started in this business in 1967. I don't know the whole story but back then ACT control panels allowed all 8's to be selected. Something to do with a "remote keyer" function. Apparently this function was never adopted and later revisions to product and newer part numbers only allowed 0 thru 7 selections on each digit. So there you have it! 8888 presumably put the code under remote control from some other piece of equipment. |
#19
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Transponder Goes Up To 8
On Dec 21, 3:35 am, Mike Granby wrote:
On Dec 20, 3:31 am, Larry Dighera wrote: Decade electrical switches are easier/ cheaper to procure than octal switches? That would explain 0-9, but these are 0-8. Perhaps 8 is the same as 0 in octal? Cheers |
#20
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Transponder Goes Up To 8
On Fri, 21 Dec 2007 17:09:47 -0800 (PST), WingFlaps
wrote: On Dec 21, 3:35 am, Mike Granby wrote: On Dec 20, 3:31 am, Larry Dighera wrote: Decade electrical switches are easier/ cheaper to procure than octal switches? That would explain 0-9, but these are 0-8. Perhaps 8 is the same as 0 in octal? Cheers isnt 8 (dec)=10 (octal) Daveb |
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