Today's Message Index:
----------------------
0. 08:21 AM - A List Contribution - It's Your Personal Squelch Button... (Matt Dralle)
1. 05:49 AM - Re: Wig-Wag wiring (Robert L. Nuckolls, III)
2. 05:52 AM - Re: Re: Wig-Wag wiring (Robert L. Nuckolls, III)
3. 07:38 AM - Re: Wig-Wag wiring (user9253)
4. 08:13 AM - Re: Wig-Wag wiring (John Tipton)
5. 02:07 PM - Re: Re: Wig-Wag wiring (Robert L. Nuckolls, III)
6. 02:41 PM - Antenna position (Bill Steer)
7. 04:14 PM - Re: Antenna position (Robert L. Nuckolls, III)
8. 05:49 PM - Re: Antenna position (Bill Steer)
9. 05:57 PM - Re: Antenna position (jim)
10. 07:04 PM - Re: Antenna position (Robert L. Nuckolls, III)
11. 08:33 PM - Pin curious (Rick Beebe)
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Subject: | A List Contribution - It's Your Personal Squelch Button... |
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Message 1
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Subject: | Re: Wig-Wag wiring |
At 04:30 PM 11/10/2018, you wrote:
>PS: I have a spare Bridge Rectifier, can I use two of the diodes
Yes. You use the common annode (-) terminal
as the power input from the switch. Tie the
AC (~) terminals to each light. Ingnore the
common cathode (+) termial.
Bob . . .
Message 2
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Subject: | Re: Wig-Wag wiring |
At 06:10 PM 11/10/2018, you wrote:
>
>How abouit DSTF3060CR Schottky, 2 diodes in one TO-220-2 package,
>available at Mouser?
That would work, but the el-cheapo bridge would be good too . . .
> Save on shipping cost by ordering Schottky diodes and current
> limiters from same source.
Current limiters not necessary for anything
but the really BIG incandescent lamps . . . and
even then, their benefit is probably hard
to quantify.
Bob . . .
Message 3
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Subject: | Re: Wig-Wag wiring |
> Current limiters not necessary for anything
> but the really BIG incandescent lamps . . . and
> even then, their benefit is probably hard
> to quantify.
I only mentioned current limiters because a highly respected contributor to this
forum had included them in his drawing posted above. :-)
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=484779#484779
Message 4
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Subject: | Re: Wig-Wag wiring |
Hi Bob
Thank you: and for LED landing lights just a simple swap over - yes
John
Sent from my iPad
----x--O--x----
> On 11 Nov 2018, at 1:49 pm, Robert L. Nuckolls, III <nuckolls.bob@aeroelec
tric.com> wrote:
>
> At 04:30 PM 11/10/2018, you wrote:
>> PS: I have a spare Bridge Rectifier, can I use two of the diodes
>
>
> Yes. You use the common annode (-) terminal
> as the power input from the switch. Tie the
> AC (~) terminals to each light. Ingnore the
> common cathode (+) termial.
>
> Bob . . .
Message 5
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Subject: | Re: Wig-Wag wiring |
>
> > Current limiters not necessary for anything
> > but the really BIG incandescent lamps . . . and
> > even then, their benefit is probably hard
> > to quantify.
>
>I only mentioned current limiters because a highly respected
>contributor to this forum had included them in his drawing posted above. :-)
Yeah, my bad. The conditional callout
for current limiters got cropped off
the original art from Eric's website.
Did some dynamic studies of the current draw
by incandescent lamps in wig-wag systems
about a decade back. Seems 55w and larger
lamps don't have time to cool off between
flashes. The only time they present the
typical cold-lamp inrush is on first
light . . . every subsequent flash is
quite benign for 'start up' current.
Bob . . .
Message 6
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Subject: | Antenna position |
I searched the archives for an answer to this question, but couldn't
find one. Probably didn't search far enough.
I'm building an Excalibur. There doesn't appear to be any place on top
for a VHF antenna, so I'm putting it on the bottom, under the front
seat. The Excalibur has short legs, so I'm using the 90 degree antenna
from ACS. The question is - where should this antenna be positioned on
the relatively small ground plane - with the connection in the center of
the ground plane, or with the connection near the front of the ground
plane so the majority of the trailing antenna is directly under the
ground plane?
Thanks very much for any help/advice.
Bill
---
This email has been checked for viruses by AVG.
https://www.avg.com
Message 7
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Subject: | Re: Antenna position |
At 04:40 PM 11/11/2018, you wrote:
>
>I searched the archives for an answer to this
>question, but couldn't find one.=C2 Probably didn't search far enough.
>
>I'm building an Excalibur. There doesn't appear
>to be any place on top for a VHF antenna, so I'm
>putting it on the bottom, under the front
>seat.=C2 The Excalibur has short legs, so I'm
>using the 90 degree antenna from ACS.=C2 The
>question is - where should this antenna be
>positioned on the relatively small ground plane
>- with the connection in the center of the
>ground plane, or with the connection near the
>front of the ground plane so the majority of the
>trailing antenna is directly under the ground plane?
>
>Thanks very much for any help/advice.
Center the ground plane . . .
Antenna 'hardware' at the base has the
lion's share of antenna CURRENT which
is the stuff of radiation. It's
effectiveness is enhanced by low
resistance, central location in
the ground plane.
Bob . . .
Message 8
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Subject: | Re: Antenna position |
Thanks, Bob.
Bill
do not archive
On 11/11/2018 7:13 PM, Robert L. Nuckolls, III wrote:
> At 04:40 PM 11/11/2018, you wrote:
>> <steerr@bellsouth.net>
>>
>> I searched the archives for an answer to this question, but couldn't
>> find one. Probably didn't search far enough.
>>
>> I'm building an Excalibur. There doesn't appear to be any place on
>> top for a VHF antenna, so I'm putting it on the bottom, under the
>> front seat. The Excalibur has short legs, so I'm using the 90
>> degree antenna from ACS. The question is - where should this
>> antenna be positioned on the relatively small ground plane - with the
>> connection in the center of the ground plane, or with the connection
>> near the front of the ground plane so the majority of the trailing
>> antenna is directly under the ground plane?
>>
>> Thanks very much for any help/advice.
>
> Center the ground plane . . .
> Antenna 'hardware' at the base has the
> lion's share of antenna CURRENT which
> is the stuff of radiation. It's
> effectiveness is enhanced by low
> resistance, central location in
> the ground plane.
>
>
> Bob . . .
>
---
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https://www.avg.com
Message 9
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Subject: | Antenna position |
I am helping with the construction of an Excalibur and I too am trying
to
determine where to put the VHF com antenna. Any information about
exactly
where you are locating this antenna, and which commercial antenna you
are
using would be appreciated. Photos of the installation would be very
nice
also. Jimkale@roadrunner.com
From: owner-aeroelectric-list-server@matronics.com
<owner-aeroelectric-list-server@matronics.com> On Behalf Of Robert L.
Nuckolls, III
Sent: Sunday, November 11, 2018 6:14 PM
Subject: Re: AeroElectric-List: Antenna position
At 04:40 PM 11/11/2018, you wrote:
<steerr@bellsouth.net
<mailto:steerr@bellsouth.net> >
I searched the archives for an answer to this question, but couldn't
find
one.=C2 Probably didn't search far enough.
I'm building an Excalibur. There doesn't appear to be any place on top
for a
VHF antenna, so I'm putting it on the bottom, under the front seat.=C2
The
Excalibur has short legs, so I'm using the 90 degree antenna from
ACS.=C2 The
question is - where should this antenna be positioned on the relatively
small ground plane - with the connection in the center of the ground
plane,
or with the connection near the front of the ground plane so the
majority of
the trailing antenna is directly under the ground plane?
Thanks very much for any help/advice.
Center the ground plane . . .
Antenna 'hardware' at the base has the
lion's share of antenna CURRENT which
is the stuff of radiation. It's
effectiveness is enhanced by low
resistance, central location in
the ground plane.
Bob . . .
Message 10
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Subject: | Antenna position |
>I'm building an Excalibur. There doesn't appear
>to be any place on top for a VHF antenna, so I'm
>putting it on the bottom, under the front
>seat.=C2 The Excalibur has short legs, so I'm
>using the 90 degree antenna from ACS.=C2 The
>question is - where should this antenna be
>positioned on the relatively small ground plane
>- with the connection in the center of the
>ground plane, or with the connection near the
>front of the ground plane so the majority of the
>trailing antenna is directly under the ground plane?
Is that fabric over steel-tube? What is the
nature of your 'ground' plane. Is it off center
between the keel and first outboard stringer?
Bob . . .
Message 11
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I'm wiring up a CAN Bus for a Garmin G3X system the Garmin-recommended
way by soldering a short pigtail to the two CAN HI wires and another to
the two CAN LO wires as they pass by a device. It got me curious about
pins. Are the machined, 4-crimp pins really that superior to the stamped
sheet metal ones? I could easily crimp both wires into one of the latter
and save a ton of time. It's an academic question as I'm already well
down the road to getting this all soldered up, but I'm curious.
--Rick
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