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jmaynard
Joined: 27 Feb 2008
Posts: 394
Location: Fairmont, MN (FRM)
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 Posted: Mon Feb 02, 2009 5:08 pm Post subject: KX170/A/B schematics? |
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I've got one of each of the King KX170, KX170A, and KX170B, and I'm trying
to get one going as a hangar monitor radio. (I'm not even gonna hook up a
mic.) I'd like to have the NAV radio play out the same speaker as the COM
radio, so I can turn it on (or up, in the case of the KX170) and listen to
the AWOS on the on-field VOR.
In my playing, I've discovered that the NAV radio audio does play out the
speaker output, but at a low volume. I'd like to make it the same as the COM
radio. Ideally, I'd also like to lay hands on a schematic for the radio for
something less than the $100+ a service manual goes for online.
Suggestions?
--
Jay Maynard, K5ZC, PP-ASEL, AGI http://www.conmicro.com
http://jmaynard.livejournal.com http://www.tronguy.net
Fairmont, MN (KFRM) (Yes, that's me!)
AMD Zodiac CH601XLi N55ZC http://www.tronguy.net/N55ZC.shtml
| | - The Matronics Avionics-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
Jay Maynard, K5ZC
AMD Zodiac XLi N55ZC |
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rjquillin
Joined: 13 May 2007
Posts: 123
Location: KSEE
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| Posted: Mon Feb 02, 2009 5:54 pm Post subject: KX170/A/B schematics? |
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Lacking some other offer, I've found that
avionicstec or contact him directly at avionicstec at hotmail dot com
on eBay has some nice manuals on CD at reasonable prices.
At 17:00 2/2/2009, you wrote:
[quote]--> Avionics-List message posted by: Jay Maynard <jmaynard(at)conmicro.com>
I've got one of each of the King KX170, KX170A, and KX170B, and I'm trying
to get one going as a hangar monitor radio. (I'm not even gonna hook up a
mic.) I'd like to have the NAV radio play out the same speaker as the COM
radio, so I can turn it on (or up, in the case of the KX170) and listen to
the AWOS on the on-field VOR.
In my playing, I've discovered that the NAV radio audio does play out the
speaker output, but at a low volume. I'd like to make it the same as the COM
radio. Ideally, I'd also like to lay hands on a schematic for the radio for
something less than the $100+ a service manual goes for online.
Suggestions?
--
Jay Maynard, K5ZC, PP-ASEL, AGI http://www.conmicro.com
[url=http://jmaynard.livejournal.com /] http://jmaynard.livejournal.com [/url] http://www.tronguy.net
Fairmont, MN (KFRM) (Yes, that's me!)
AMD Zodiac CH601XLi N55ZC http://www.tronguy.net/N55ZC.shtml
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Mon Feb 02, 2009 6:39 pm Post subject: KX170/A/B schematics? |
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I’m just thinking out loud here but the reason your Nav beacons and identifiers may be low is they are supposed to have separate antennae. I assume you did have both com and Nav antennae connected when you tested and not the com antenna alone.
Noel
From: owner-avionics-list-server(at)matronics.com [mailto:owner-avionics-list-server(at)matronics.com] On Behalf Of Ron Quillin <recent
Sent: Monday, February 02, 2009 10:21 PM
To: avionics-list(at)matronics.com
Subject: Re: KX170/A/B schematics?
Lacking some other offer, I've found that
avionicstec or contact him directly at avionicstec at hotmail dot com
on eBay has some nice manuals on CD at reasonable prices.
At 17:00 2/2/2009, you wrote:
--> Avionics-List message posted by: Jay Maynard <jmaynard(at)conmicro.com>
I've got one of each of the King KX170, KX170A, and KX170B, and I'm trying
to get one going as a hangar monitor radio. (I'm not even gonna hook up a
mic.) I'd like to have the NAV radio play out the same speaker as the COM
radio, so I can turn it on (or up, in the case of the KX170) and listen to
the AWOS on the on-field VOR.
In my playing, I've discovered that the NAV radio audio does play out the
speaker output, but at a low volume. I'd like to make it the same as the COM
radio. Ideally, I'd also like to lay hands on a schematic for the radio for
something less than the $100+ a service manual goes for online.
Suggestions?
--
Jay Maynard, K5ZC, PP-ASEL, AGI http://www.conmicro.com
[url=http://jmaynard.livejournal.com /]http://jmaynard.livejournal.com [/url]http://www.tronguy.net
Fairmont, MN (KFRM) (Yes, that's me!)
AMD Zodiac CH601XLi N55ZC http://www.tronguy.net/N55ZC.shtml
===========
Avionics-List Email Forum -
http://www.matronics.com/Navigator?Avionics-List
===========
; - MATRONICS WEB FORUMS -
http://forums.matronics.com
===========
; - List Contribution Web Site -
; -Matt Dralle, List Admin.
http://www.matronics.com/contribution
=========== | Quote: | | http://www.matronics.com/Navigator?Avionics-List |
0123456789
[quote][b]
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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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jmaynard
Joined: 27 Feb 2008
Posts: 394
Location: Fairmont, MN (FRM)
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| Posted: Mon Feb 02, 2009 7:59 pm Post subject: KX170/A/B schematics? |
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On Mon, Feb 02, 2009 at 11:05:43PM -0330, Noel Loveys wrote:
| Quote: | I?m just thinking out loud here but the reason your Nav beacons and
identifiers may be low is they are supposed to have separate antennae. I
assume you did have both com and Nav antennae connected when you tested and
not the com antenna alone.
|
I have the radios on the bench hooked up to a service monitor (a Marconi
2966). The service monitor was connected to the NAV antenna input for that
test. I got the same result on both the KX170 and KX170A, which is what
made me think it was a design issue.
I'm going to let the KX170A run overnight; I don't know how long the radios
have sat, so I'll let the capacitors re-form. When I first hooked it up, it
took about 7 microvolts to break the squelch; it improved to 3.4 microvolts
after running for 20 minutes or so. That's pretty anemic, but I'm not that
worried, since I mainly want to listen to the local traffic on CTAF.
--
Jay Maynard, K5ZC, PP-ASEL, AGI http://www.conmicro.com
http://jmaynard.livejournal.com http://www.tronguy.net
Fairmont, MN (KFRM) (Yes, that's me!)
AMD Zodiac CH601XLi N55ZC http://www.tronguy.net/N55ZC.shtml
| | - The Matronics Avionics-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Avionics-List |
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_________________
Jay Maynard, K5ZC
AMD Zodiac XLi N55ZC |
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jmaynard
Joined: 27 Feb 2008
Posts: 394
Location: Fairmont, MN (FRM)
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| Posted: Tue Feb 03, 2009 3:44 pm Post subject: KX170/A/B schematics? |
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Next dumb question: There are 4 pins on the big connector labeled AUX AUDIO
(1-4), pins 36, 37, 15, and 16. The tray I have has two of them connected
together and one brought out and taped off. What are they used for?
--
Jay Maynard, K5ZC, PP-ASEL, AGI http://www.conmicro.com
http://jmaynard.livejournal.com http://www.tronguy.net
Fairmont, MN (KFRM) (Yes, that's me!)
AMD Zodiac CH601XLi N55ZC http://www.tronguy.net/N55ZC.shtml
| | - The Matronics Avionics-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Avionics-List |
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_________________
Jay Maynard, K5ZC
AMD Zodiac XLi N55ZC |
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rjquillin
Joined: 13 May 2007
Posts: 123
Location: KSEE
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| Posted: Tue Feb 03, 2009 4:46 pm Post subject: KX170/A/B schematics? |
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AUX audio inputs from other devices. Perhaps the attached schematic will assist.
Ron Q.
At 15:43 2/3/2009, you wrote:
| Quote: | --> Avionics-List message posted by: Jay Maynard <jmaynard(at)conmicro.com>
Next dumb question: There are 4 pins on the big connector labeled AUX AUDIO
(1-4), pins 36, 37, 15, and 16. The tray I have has two of them connected
together and one brought out and taped off. What are they used for?
--
Jay Maynard, K5ZC, PP-ASEL, AGI http://www.conmicro.com
[url=http://jmaynard.livejournal.com /] http://jmaynard.livejournal.com [/url] http://www.tronguy.net
Fairmont, MN (KFRM) (Yes, that's me!)
AMD Zodiac CH601XLi N55ZC http://www.tronguy.net/N55ZC.shtml |
| | - The Matronics Avionics-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Avionics-List |
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| Description: |
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Download |
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AUX_inputs_from_kx170a.pdf |
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80.39 KB |
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douglist(at)macnauchtan.c
Guest
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| Posted: Wed Feb 04, 2009 9:37 am Post subject: KX170/A/B schematics? |
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I have been working off list with Jay. The results are some schematic
scans and other stuff that is available on:
<ftp://ftp.macnauchtan.com/king/>
If anyone else is interested please feel free to download. I will be
adding to the file list for the next couple of days based on Jay's
requests but the scans take some time. I have enough room available
on the site for a month or so but it will have to come down one day.
I remain a firm believer in free access to manufacturers' data on
parts no longer in production or otherwise supported but I'm not so
sure Bendix-King lawyers agree with me.
--
--> A fair tax is one that you pay but I don't <--
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