Today's Message Index:
----------------------
1. 08:06 AM - Re: KMA20 installation manual or ?? (Mike Larkin)
2. 09:03 AM - Re: KMA20 installation manual or ?? (David Lloyd)
3. 04:37 PM - Re: Transorb? (Bob C.)
4. 11:11 PM - Re: Transorb? (NYTerminat@aol.com)
Message 1
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| Subject: | KMA20 installation manual or ?? |
--> Avionics-List message posted by: "Mike Larkin" <mlas@cox.net>
The speaker input to the KMA-20 is a load for the output of the com
radio being used. Some com radios need a load for the power generated
for the speaker output and the KMA-20 gives you a place to send it. On
all newer radios the com has its own load and connecting to the speaker
input on the KMA-20 is not required. That being said, I'm not sure
about the TKM stuff. The folks at TKM do things a little different and
it may be in your best interest to connect the radio to the speaker
input. The com input on the KMA-20 is the input that the audio panel
will be using for your headsets and speaker output, this must be connect
for the com to work properly.
Mike Larkin
-----Original Message-----
From: owner-avionics-list-server@matronics.com
[mailto:owner-avionics-list-server@matronics.com] On Behalf Of Greg
Puckett
Subject: Avionics-List: KMA20 installation manual or ??
--> Avionics-List message posted by: "Greg Puckett" <rv8er@myawai.com>
Hello,
I'm installing a KMA20 and while I have the pin-out from
aeroelectric.com I need a couple of questions answered.
It appears that the KMA20 has a speaker input and a phone level input
from each Comm. The TKM radio has a speaker output and a Comm. output.
I'm assuming that I should not be connecting both of these, but I'm not
sure.
Does the KMA20 have a speaker level and a phone level input available
just so you can connect a navcom that may only have one or the other.
I'm worried that both of these inputs will be summed if I connect them
both and the overall volume will be twice as loud as it should.
Does anyone have a KMA20 install manual handy that may have the answer
to this?
Thanks,
Greg
--
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Message 2
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| Subject: | Re: KMA20 installation manual or ?? |
--> Avionics-List message posted by: "David Lloyd" <skywagon@charter.net>
There maybe another condition to consider about the KMA-20.
Sidetone to your headset. Seemed to me that it did not have the circuit
path to have sidetone... from the mike.
This may be a problem only for earlier models of -20.
However, there is a way to add a resistor to the circuitry such that it
"leaks" some mike power to the headphones. Many years ago, I saw an
avionics shop make this circuit adjustment but, can't tell you the paths
that he tapped, with the resistor addition, to bring sidetone to the
headset.
David
----- Original Message -----
From: "Mike Larkin" <mlas@cox.net>
Subject: RE: Avionics-List: KMA20 installation manual or ??
> --> Avionics-List message posted by: "Mike Larkin" <mlas@cox.net>
>
> The speaker input to the KMA-20 is a load for the output of the com
> radio being used. Some com radios need a load for the power generated
> for the speaker output and the KMA-20 gives you a place to send it. On
> all newer radios the com has its own load and connecting to the speaker
> input on the KMA-20 is not required. That being said, I'm not sure
> about the TKM stuff. The folks at TKM do things a little different and
> it may be in your best interest to connect the radio to the speaker
> input. The com input on the KMA-20 is the input that the audio panel
> will be using for your headsets and speaker output, this must be connect
> for the com to work properly.
>
> Mike Larkin
>
> -----Original Message-----
> From: owner-avionics-list-server@matronics.com
> [mailto:owner-avionics-list-server@matronics.com] On Behalf Of Greg
> Puckett
> To: Avionics-List@matronics.com
> Subject: Avionics-List: KMA20 installation manual or ??
>
> --> Avionics-List message posted by: "Greg Puckett" <rv8er@myawai.com>
>
> Hello,
>
> I'm installing a KMA20 and while I have the pin-out from
> aeroelectric.com I need a couple of questions answered.
>
> It appears that the KMA20 has a speaker input and a phone level input
> from each Comm. The TKM radio has a speaker output and a Comm. output.
> I'm assuming that I should not be connecting both of these, but I'm not
> sure.
>
> Does the KMA20 have a speaker level and a phone level input available
> just so you can connect a navcom that may only have one or the other.
> I'm worried that both of these inputs will be summed if I connect them
> both and the overall volume will be twice as loud as it should.
>
> Does anyone have a KMA20 install manual handy that may have the answer
> to this?
>
>
> Thanks,
>
>
> Greg
>
>
> --
>
>
> --
>
>
>
Message 3
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--> Avionics-List message posted by: "Bob C. " <flyboy.bob@gmail.com>
Try: http://www.periheliondesign.com/ Eric Jones' website . . . I'm sure he
can help you . . . no connection with Eric but I've purchased some things
from him . . . he seems pretty knowledgeable.
Good Luck,
Bob
On 7/16/05, Lmar <my93avid@yahoo.com> wrote:
>
> --> Avionics-List message posted by: Lmar <my93avid@yahoo.com>
>
> Hi all,
>
> I have a Stratomaster engine insturment that advise to use a "transorb"
> between the poositive and negative after the fuse and prior to the
> insturment in order to absorb transiet high voltage. I have not been able to
> find a "transorb". Do we in the USA call it by another name?
>
> Electronically challenged,
>
> Larry
>
>
> ---------------------------------
>
>
Message 4
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--> Avionics-List message posted by: NYTerminat@aol.com
Larry
Look at Stratomaster Website or Sport Flying Shop, they sell the transorb for
$6.00. It looks like a diode.
Bob Spudis
CH701, 912S
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