Today's Message Index:
----------------------
1. 05:08 PM - KX170/A/B schematics? (Jay Maynard)
2. 05:54 PM - Re: KX170/A/B schematics? (Ron Quillin)
3. 06:39 PM - Re: KX170/A/B schematics? (Noel Loveys)
4. 07:59 PM - Re: KX170/A/B schematics? (Jay Maynard)
Message 1
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| Subject: | KX170/A/B schematics? |
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
Message 2
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| Subject: | Re: KX170/A/B schematics? |
Lacking some other offer, I've found that
<http://myworld.ebay.com/ebaymotors/avionicstec/>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:
>
>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
>
Message 3
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| Subject: | KX170/A/B schematics? |
I=92m 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@matronics.com
[mailto:owner-avionics-list-server@matronics.com] On Behalf Of Ron
Quillin
<recent
Sent: Monday, February 02, 2009 10:21 PM
Subject: Re: Avionics-List: KX170/A/B schematics?
Lacking some other offer, I've found that
avionicstec <http://myworld.ebay.com/ebaymotors/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:
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://www.conmicro.com/>
http://jmaynard.livejournal.com <http://jmaynard.livejournal.com />
http://www.tronguy.net <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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Message 4
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| Subject: | Re: KX170/A/B schematics? |
On Mon, Feb 02, 2009 at 11:05:43PM -0330, Noel Loveys wrote:
> 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
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