Today's Message Index:
----------------------
1. 11:11 AM - Transponder antenna available (Robert L. Nuckolls, III)
2. 11:22 AM - Re: Transponder antenna available (Mike Nellis)
3. 12:42 PM - Re: Transponder antenna available (Charlie England)
4. 01:14 PM - Re: Transponder antenna available (Robert L. Nuckolls, III)
5. 02:09 PM - Radio speaker volume control (Paul Kuntz)
6. 05:29 PM - Re: Radio speaker volume control (Robert L. Nuckolls, III)
7. 06:24 PM - Re: Radio speaker volume control (Tim Andres)
8. 07:28 PM - Re: Radio speaker volume control (Paul Kuntz)
9. 07:35 PM - Re: Radio speaker volume control (Paul Kuntz)
Message 1
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| Subject: | Transponder antenna available |
I was digging around in the goodies box looking
for a missing crimp tool and found this puppy . . .
Emacs!
I don't think this has ever been installed.
$15 postage paid to first interested individual . . .
Bob . . .
Message 2
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| Subject: | Re: Transponder antenna available |
On Friday, March 02, 2012 1:09:00 PM, Robert L. Nuckolls, III wrote:
> I was digging around in the goodies box looking
> for a missing crimp tool and found this puppy . . .
>
> Emacs!
>
> I don't think this has ever been installed.
>
> $15 postage paid to first interested individual . . .
>
> Bob . . .
>
I'll take it off your hand Bob. Do you take credit cards or PayPal?
Other wise I'll stick $15 in an envelope.
Message 3
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| Subject: | Re: Transponder antenna available |
On 03/02/2012 01:09 PM, Robert L. Nuckolls, III wrote:
> I was digging around in the goodies box looking
> for a missing crimp tool and found this puppy . . .
>
>
> I don't think this has ever been installed.
>
> $15 postage paid to first interested individual . . .
>
> Bob . . .
>
I'll take it, and thanks! How/where do you want payment?
I can do Paypal, credit card, check, etc.
I'll send my address to your email address.
Thanks again,
Charlie
ceengland@bellsouth.net
Message 4
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| Subject: | Re: Transponder antenna available |
At 01:21 PM 3/2/2012, you wrote:
>
>On Friday, March 02, 2012 1:09:00 PM, Robert L. Nuckolls, III wrote:
>>I was digging around in the goodies box looking
>>for a missing crimp tool and found this puppy . . .
>>
>>Emacs!
>>
>>I don't think this has ever been installed.
>>
>>$15 postage paid to first interested individual . . .
>>
>>Bob . . .
>
>I'll take it off your hand Bob. Do you take credit cards or PayPal?
>Other wise I'll stick $15 in an envelope.
You got it. I'll invoice you on PayPal.
Bob . . .
Message 5
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| Subject: | Radio speaker volume control |
I have a small 8-ohm speaker that I plan to connect to the speaker output
of my XCOM-760 radio. For speaker volume control, do I simply wire a
potentiometer into one of the wires going to the speaker, introducing a
variable resistance in series with the speaker coil, or is something more
specialized necessary?
Regards,
Paul Kuntz
Message 6
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| Subject: | Re: Radio speaker volume control |
At 04:06 PM 3/2/2012, you wrote:
>I have a small 8-ohm speaker that I plan to connect to the speaker
>output of my XCOM-760 radio. For speaker volume control, do I
>simply wire a potentiometer into one of the wires going to the
>speaker, introducing a variable resistance in series with the
>speaker coil, or is something more specialized necessary?
There's a specialized device for direct
control of speaker volume called an L-pad
which has all the appearances of an ordinary
potentiometer . . .
Emacs!
. . . but specifically designed to work with
low impedance speakers. See:
http://tinyurl.com/84jwt7v
I think that radio's volume control affects
both the headset and speaker volumes. Do you
anticipate simultaneous use of both headphones
and speaker such that independent control of
each is necessary? If so, it could be that
setting the radio's volume for the desired headset
level will leave you short on speaker volume
so that even with the l-pad set for wide-open,
the speaker volume is found wanting.
Bob . . .
Message 7
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| Subject: | Re: Radio speaker volume control |
Paul the Icom A210 may be different, but on my plane I just used a SPST swit
ch to turn the speaker on/off. Then the volume controls the speaker and head
phones if the speaker is selected on, of course I don't use both at the same
time so this has worked great.
Tim
Sent from my iPad
On Mar 2, 2012, at 2:06 PM, Paul Kuntz <paul.r.kuntz@gmail.com> wrote:
> I have a small 8-ohm speaker that I plan to connect to the speaker output o
f my XCOM-760 radio. For speaker volume control, do I simply wire a potenti
ometer into one of the wires going to the speaker, introducing a variable re
sistance in series with the speaker coil, or is something more specialized n
ecessary?
>
> Regards,
> Paul Kuntz
>
>
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>
Message 8
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| Subject: | Re: Radio speaker volume control |
Bob,
Thanks a lot for your quick and helpful reply. You are correct about there
being only one volume control for headsets and speaker on this radio, and
your comment about the relative volume of headsets and speaker was was
right on. As soon as I read your reply, I went to the plane and hooked up
the speaker, which arrived in the mail today. With the headset volume at a
comfortable level, the speaker is audible at a level that doesn't need to
be turned down further with a volume control, so adding a separate speaker
volume control seems pointless.
The L-pad tip was educational, nevertheless. It's now part of the great
education in aircraft electrical systems that I have received from this
forum, your excellent book and your posts here over the past several years.
Regards,
Paul Kuntz
On Fri, Mar 2, 2012 at 5:27 PM, Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 04:06 PM 3/2/2012, you wrote:
>
> I have a small 8-ohm speaker that I plan to connect to the speaker output
> of my XCOM-760 radio. For speaker volume control, do I simply wire a
> potentiometer into one of the wires going to the speaker, introducing a
> variable resistance in series with the speaker coil, or is something more
> specialized necessary?
>
>
> There's a specialized device for direct
> control of speaker volume called an L-pad
> which has all the appearances of an ordinary
> potentiometer . . .
>
> [image: Emacs!]
>
>
> . . . but specifically designed to work with
> low impedance speakers. See:
>
> * http://tinyurl.com/84jwt7v*
>
> I think that radio's volume control affects
> both the headset and speaker volumes. Do you
> anticipate simultaneous use of both headphones
> and speaker such that independent control of
> each is necessary? If so, it could be that
> setting the radio's volume for the desired headset
> level will leave you short on speaker volume
> so that even with the l-pad set for wide-open,
> the speaker volume is found wanting.
>
> **
>
> ** Bob . . .
>
Message 9
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| Subject: | Re: Radio speaker volume control |
Tim,
I agree. A switch to turn the speaker on and off is really all that's
needed, and even that seems somewhat redundant. See my other post just
before this one.
For pre-flight and post-flight radio use with the engine off, having the
speaker on all the time seems just fine. With the engine running that the
headsets at a comfortable volume, I suspect the speaker will be drowned out
by engine noise.
Regards,
Paul Kuntz
On Fri, Mar 2, 2012 at 6:22 PM, Tim Andres <tim2542@sbcglobal.net> wrote:
> Paul the Icom A210 may be different, but on my plane I just used a SPST
> switch to turn the speaker on/off. Then the volume controls the speaker and
> headphones if the speaker is selected on, of course I don't use both at the
> same time so this has worked great.
> Tim
>
> Sent from my iPad
>
> On Mar 2, 2012, at 2:06 PM, Paul Kuntz <paul.r.kuntz@gmail.com> wrote:
>
> I have a small 8-ohm speaker that I plan to connect to the speaker output
> of my XCOM-760 radio. For speaker volume control, do I simply wire a
> potentiometer into one of the wires going to the speaker, introducing a
> variable resistance in series with the speaker coil, or is something more
> specialized necessary?
>
> Regards,
> Paul Kuntz
>
> *
>
> *
>
> *
>
> *
>
>
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