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Eric M. Jones
Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts
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 Posted: Mon Jul 29, 2013 12:32 pm Post subject: Re: 14V or 28V |
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Yes, Watts is Watts, but the input voltage is irrelevant, and usually there isn't much hardware-dependent on a particular voltage that the manufacturer won't have another voltage available. But keeping the 28V radio and having an up-converter is a bad use of money, an increase in noise and weight, a decrease in reliability.
Eric's Rule #1: 1) Sell what you don't want on Ebay. 2) Buy the appropriate unit.
Eric's Rule #2: 99% of everything electrical on Earth comes in a 12V model.
GNS-430AW is 14/28 V operation.
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Eric M. Jones
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nuckolls.bob(at)aeroelect
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| Posted: Mon Jul 29, 2013 1:12 pm Post subject: 14V or 28V |
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At 03:32 PM 7/29/2013, you wrote:
| Quote: |
Yes, Watts is Watts, but the input voltage is irrelevant, and
usually there isn't much hardware-dependent on a particular voltage
that the manufacturer won't have another voltage available.
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Most of the time. Garmin had several products that
would run on 14/28 for the 'smart side' but needed
28v for full power out of the transmitter . . . but
it was still a quite useful output at 14v.
I'd have to dig back in my files to identify the radio
I did install drawings for on the AGATE program
at Beech but it had that characteristic.
Bob . . .
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gerry.vandyk(at)shaw.ca
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| Posted: Mon Jul 29, 2013 1:41 pm Post subject: 14V or 28V |
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Just happened to be looking at the 400 series installation manual this afternoon. Pate 1.4.2 "General Specifications" says:
Input Voltage range - all unites (main connector) 10 to 33.2 VDC
Input Voltage range GNC 420W, GNS 430W (Com Connector) - 11 to 33 VDC
Input Voltage range GNC 420AW, GNS 430AW (Com Connector) - 24.1 to 33 VDC
GNC 420W, GNC 420AW (Main Connector) 1.2A(at)28VDC (max) 2.5A(at)14VDC (max)
GNS 430W, GNS 430AW (Main Connector) 1.2A(at)28VDC (max) 2.5A(at)14VDC (max)
(amongst other specs)
Evidently the 420AW / 430AW units are 24/28V on the com side but full voltage range on the main connector.
Gerry
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