Today's Message Index:
----------------------
1. 05:15 AM - Re: NORAD (myrontruex)
2. 09:29 AM - Re: NORAD (Ron Koval)
3. 11:51 AM - Re: (no subject) (Emil Sr)
4. 12:41 PM - Re: NORAD (Ron Koval)
Message 1
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NORAD
Since you have transmitting and receiving problems it is most likely the
antenna. First thing to do is put an ohmeter on the connector to see if
it has shorted. If it is not shorted then cut it off a few inches back
and install a new one. As suggested a new copper one behind the baggage
compartment will work but getting in there is not easy of course. Years
ago a friend bought an antenna that was basically the same but was built
on a piece of light weight material that allows it to follow the curve
of his fuselage.
From: Larry Wheat
Sent: Monday, February 02, 2015 3:53 PM
Subject: Re: Pulsar-List: NORAD
I had to do the same thing on my Pulsar III. If you remove the rudder
you can access the two rivets that connect the 1/2 wave dipole glued to
the rudder. Just clip the cable and pull out. When you install the
antenna don=92t forget about the ground plane. You can use aluminum tape
or fab on out of thin aluminum. I made mine out of soft aluminum sheet
(easier to get the contour) and glued in place. Did a test after
installation and SWR was 1.7 to 1 MUCH better than I thought I would
get. Any help I can render feel free to contact me. Larry Wheat 206
819-2352 J250 Moses Lake, Washington USA
On Feb 2, 2015, at 12:33 PM, pilot623 <pilot623@gmail.com> wrote:
I realized shortly after takeoff from Houston yesterday that radio
reception was almost nonexistent and transmission was nonexistent. After
dodging controlled airspace at Abilene and Lubbock, I arrived Clovis
(KCVN) without issue. Once on the ground, the local FBO said he had
received a call from DHS about me but he assured them I was an expected
arrival. Besides that, I was squawking 7600 the whole way.
My guess is an antenna problem which would be the easier (cheaper)
fix. My com antenna is built into the vertical stab so access there is
long gone but I would be able to install an antenna behind the baggage
area by clipping the coax and installing a new connector.
My question for the group is what recommendations do you have for com
antennas that can install and operate inside the airframe? I'm having
the radio bench tested before making my next move. Oh, and I have
ordered an I-com handheld which I've wanted to do forever.
Jim
N623JF
href="http://www.matronics.com/Navigator?Pulsar-List">http://www.matron
ics.com/Navigator?Pulsar-List
href="http://forums.matronics.com/">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
ontribution
Message 2
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Jim,
One thing to note when taking in all of the antenna options that are being posted
is making sure you match your radio's output specifications. My radio and
even the Icom radio specifications (and I would expect all Com radios), require
a 50 ohm impedance. Some even specify a vertical antenna. Impedance matching
to the antenna has allot to do with antenna design. Even if there is some mismatch,
the radio will work, but not at its maximum designed output and input
performance. Antenna manufacturers when they have a 50 ohm specification, it
is just that (by design factors of whip length, material used, diameter size,
cable/connector conductor spacing ...).
A dipole antenna can work, but in theory it has an impedance of 73 ohms resistance
and 43 ohms reactance. This can be adjusted by the size of wire, changing
ideal length of the dipole (in this case shorter than quarter wave and as well
as other mechanical elements), but will you know you have a 50 ohm impedance.
Just like getting SWR under 2.0, making sure you have the proper impedance match
should be taken into consideration.
Ron
________________________________
From: pilot623 <pilot623@gmail.com>
Sent: Monday, February 2, 2015 2:33 PM
Subject: Pulsar-List: NORAD
NORAD
I realized shortly after takeoff from Houston yesterday that radio reception was
almost nonexistent and transmission was nonexistent. After dodging controlled
airspace at Abilene and Lubbock, I arrived Clovis (KCVN) without issue. Once
on the ground, the local FBO said he had received a call from DHS about me but
he assured them I was an expected arrival. Besides that, I was squawking 7600
the whole way.
My guess is an antenna problem which would be the easier (cheaper) fix. My com
antenna is built into the vertical stab so access there is long gone but I would
be able to install an antenna behind the baggage area by clipping the coax
and installing a new connector.
My question for the group is what recommendations do you have for com antennas
that can install and operate inside the airframe? I'm having the radio bench tested
before making my next move. Oh, and I have ordered an I-com handheld which
I've wanted to do forever.
Jim
N623JF
Message 3
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| Subject: | Re: (no subject) |
On 1/28/2015 5:50 PM, GREGSMI@aol.com wrote: Hi All Made hotel
reservations today see y'all in May Emil Radtke N143NB
>
> We are full speed ahead for the Pulsar reunion. It will be May 28 31
> in Lawrence, Kansas. We will be staying and meeting at the Holiday Inn
> Express. Please call 785-749-7555 to make your room reservations and
> be sure to tell them you are with the Pulsar group to get the special
> rate of $65/night.
>
> After many years of great service our caterer has retired. Our new
> caterer comes highly recommended but the prices are higher. The cost
> for the event is $135/each. Please send your check and reservations to
>
> Greg Smith
>
> 4404 SE Gemstone LN
>
> Topeka, KS. 66609
>
> Please indicate if you will be flying in your Pulsar.
>
> The event schedule will be the same as in the past.
>
> May 28
>
> Arrivals at Lawrence airport.
>
> Pizza and drinks at the hotel meeting room at 6:30PM
>
> May 29
>
> 7AM breakfast at hotel meeting room.
>
> 8:30 12seminars
>
> 12-1:30Lunch served at hotel
>
> 2-5 seminars
>
> 6PMBarBQ served at hotel
>
> May 30
>
> 7AM Breakfast at hotel
>
> 8:30 drive to airport for flying
>
> 12 Lunch served at airport
>
> 5PM return to hotel
>
> 6:30 Prime Rib dinner served at hotel
>
> 7:30 short program
>
> May 31 Breakfast and departures
>
> *
>
>
> *
Message 4
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Jim,
One thing to note when taking in all of the antenna options that are being
posted is making sure you match your radio's output specifications. My
radio and even the Icom radio specifications (and I would expect all Com radios),
require a 50 ohm impedance. Some even specify a vertical
antenna. Impedance matching to the antenna has allot to do with antenna design.
Even if there is some mismatch, the radio will work, but not
at its maximum designed output and input performance. Antenna
manufacturers when they have a 50 ohm specification, it is just that (by design
factors of whip length, material used, diameter size,
cable/connector conductor spacing ...).
A dipole antenna can work, but in theory it has an impedance of 73 ohms
resistance + 43 ohms reactance. This can be adjusted by the size of
wire, changing ideal length of the dipole (in this case shorter than
quarter wave and as well as other mechanical elements), but will you know if you
have a 50 ohm impedance.
Just like getting SWR under 2.0, making sure you have the proper impedance match
should be taken into consideration.
Ron
________________________________
From: pilot623 <pilot623@gmail.com>
Sent: Monday, February 2, 2015 2:33 PM
Subject: Pulsar-List: NORAD
NORAD
I realized shortly after takeoff from Houston yesterday that radio reception was
almost nonexistent and transmission was nonexistent. After dodging controlled
airspace at Abilene and Lubbock, I arrived Clovis (KCVN) without issue. Once
on the ground, the local FBO said he had received a call from DHS about me but
he assured them I was an expected arrival. Besides that, I was squawking 7600
the whole way.
My guess is an antenna problem which would be the easier (cheaper) fix. My com
antenna is built into the vertical stab so access there is long gone but I would
be able to install an antenna behind the baggage area by clipping the coax
and installing a new connector.
My question for the group is what recommendations do you have for com antennas
that can install and operate inside the airframe? I'm having the radio bench tested
before making my next move. Oh, and I have ordered an I-com handheld which
I've wanted to do forever.
Jim
N623JF
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