Today's Message Index:
----------------------
1. 02:45 AM - Re: Re: 4:1 C box (Ellery Batchelder Jr)
2. 04:19 AM - Re: Looking for help to fix radio noise? (icrashrc)
3. 05:33 AM - Re: Looking for help to fix radio noise? (Eugene Zimmerman)
4. 07:09 AM - Re: Looking for help to fix radio noise? (pj.ladd)
5. 07:46 AM - to show my appreciation (sratm)
6. 08:14 AM - Re: Looking for help to fix radio noise? (b young)
7. 01:19 PM - Re: Looking for help to fix radio noise? (Mike Welch)
8. 05:08 PM - AEROSHELL OIL SPORT PLUS 2 (albertakolbmk3)
9. 08:51 PM - Re: AEROSHELL OIL SPORT PLUS 2 (Richard Pike)
Message 1
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Richard
if you want to trade your IVO for a 3 blade warp Talk to me
Ellery Batchelder Jr.
-----Original Message-----
From: Richard Pike <richard@bcchapel.org>
Sent: Tue, Apr 6, 2010 11:19 pm
Subject: Kolb-List: Re: 4:1 C box
ickofudall wrote:
It's a three blade with straight blades and square tips. I get 82 IAS at
6200
PM, but I run 62 IAS at 5200 mostly for economy and longevity and almost
never
o above 5600 RPM in level flight.
Rick
[b]
hanks, that's exactly what I wanted. Now All I have to do is see if I can
hange my 2 blade Ivo to a 3 blade and use it, or do I need to sell the Ivo
and
o to a 3 blade Warp.
Which will make John SO pleased... )
Richard Pike
KIII N420P (420ldPoops)
ead this topic online here:
http://forums.matronics.com/viewtopic.php?p=293301#293301
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Message 2
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Subject: | Re: Looking for help to fix radio noise? |
Gene,
Obviously we need more info on the type of coax and antenna you're using but here's
my best guess...
To my knowledge picking up a radio or TV station when close to the broadcasting
tower means you need a balun in your system. Without one it's actually possible
to overload and ruin the input side of the radio, if it's not protected internally.
I've attached a file with a good description of what a balun does and
how to make one yourself. It was easier than typing it all myself! :-)
Scott
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=293473#293473
Attachments:
http://forums.matronics.com//files/antenna_design_118.pdf
Message 3
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Subject: | Re: Looking for help to fix radio noise? |
Scott,
Thank you,
That is precisely the kind of help I was looking for.
I will be trying the balun soon.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=293476#293476
Message 4
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Subject: | Re: Looking for help to fix radio noise? |
I believe you have to have at least a rectangular metal grid, the length
of your antenna in each direction, that the antenna mounts in the center
of.>>
If an ordinary handheld works fine from a little `rubber ducky` antenna
about 6 inches long why is all this other stuff required?
info please
Pat
Message 5
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Subject: | to show my appreciation |
i wanted to stop by and thank you all again. It has been hard with the passing
of my father, harder than i imagined. With all of you that were able to able to
his memorial it has help to ease the pain. My condolences go out to you that
have lost your fathers,recently or in the past. You don't know the pain someone
feels until you feel it yourself. I pray that you all were able to find the
peace that you needed. As i have.
it's going to be a long road until i am the pilot my father was, or to even know
everything he knew of airplanes. But i hope that with your help that the day
will come that i can say i am. thank you again. and i look forward to interacting
with you all in the future.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=293492#293492
Message 6
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Subject: | Looking for help to fix radio noise? |
I get lots of interference, or feed over noise whenever I get within two or
three miles of a local radio tower.
Is there some kind of antenna filter or something I can use to prevent this?
My antenna I believe came off a general aviation, possibly a Cessna 172.
Any radio experts out there in Kolb land that can point me in the right
direction to fix this?
Gene Z
>>>>>>>>>>>>>>>>>>>>>>>>>>
More specific information needed. Radio, coax, antenna, how mounted and
installed. And I am trusting that you have used an swr meter to make sure
all the components are matched and tuned properly. Not knowing all the
details here is a few possibilities. And if the above is not true,,,,
that would be the first things I would do. NO even if you have done it,
do it again, things change.
By local radio tower am I to understand it is an am or fm radio tower...
or police / public safety system.
The basic problem is your radio inability to filter out the signals from the
radio towers. It could be fixed with a radio with a better filter in the
receiver. Or you could add a filter. Adding a filter may be 1/2 the
cost of a new radio.
For am fm you could install a high pass filter. Which would attenuate
(reduce the signal strength) of all the frequencies below the aircraft band
For public safety,, you could put in a low pass filter
Or for both you could install a band pass filter that would only pass the
aircraft frequencies and attenuate all below and above.
Google band pass filter and see what you can find.
The canister filters that I have used are rather large. 2 x 3 x 12 inches.
However you may be able to find some combination of capacitor and inductor
to hook across the antenna lead that would do the same. Sorry I am not much
help in designing or specifying the parts.
Boyd Young
mkIII
ham radio operator n7wfm
do not archive.
Ok just read pats reply. The rubber duck should be tuned by the
manufacture to the proper frequency, but because of the nature of rubber
duck antennas, in order to make them short and convenient, they are a
compromise out of the box. A full quarter wave antenna with a ground
plane, or 1/2 wave dipole, should transmit and receive twice as far,
don't get me completely wrong, the rubber duck may go 50 miles or so
provided it is mounted in such a way that the signal is not blocked by
surrounding structure.
Message 7
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Subject: | Looking for help to fix radio noise? |
Pat=2C
The flexible antenna that is usually found on handheld radios is a compro
mise=2C at best. It is a skinny wire of about 23" or 58.5 cm=2C or so=2C c
oiled up and cast in rubber.
In an open environment=2C it works sufficient to allow for "basic" radio
reception. It is hardly the best antenna=2C it just happens to be the most
practical......for a handheld radio.
But=2C in an aircraft structure=2C which often means lots of metal=2C it'
s ability to receive and transmit is significantly diminished. Therefore
=2C a person might have to resort to better antenna designs to achieve prop
er reception=2C if you want to use the handheld radio in an aircraft.
There are several "types" of antennas. The dipole antenna Scott shared w
ith us is one. The is also the conventional aircraft mast=2C and the coppe
r foil antenna (usually for fiberglass airplanes)=2C to name a couple more.
(I made one of these copper foil antennas for my GlaStar. I avoided the
need for a balun by using tri-ax cable)
The are many other antenna designs=2C each fulfilling it's best role in p
erformance and practicality.
As I said before=2C I'm no antenna expert=2C but I did play one on tv onc
e. (I was an electronics and electrical engineering student in college)
For a radio to perform very well=2C a ton of factors must be taken into a
ccount. These factors are what an electronics expert could use to design a
decent antenna with.
Mike Welch
do not archive
From: pj.ladd@btinternet.com
Subject: Re: Kolb-List: Looking for help to fix radio noise?
I believe you have to have at least a rectangular metal grid=2C the length
of your antenna in each direction=2C that the antenna mounts in the center
of.>>
If an ordinary handheld works fine from a little `rubber ducky` antenna abo
ut 6 inches long why is all this other stuff required?
info please
Pat
_________________________________________________________________
The New Busy is not the old busy. Search=2C chat and e-mail from your inbox
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Message 8
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Subject: | AEROSHELL OIL SPORT PLUS 2 |
Hi Guys,
Anyone know what ratio this oil can be mixed at and where a person can buy it in
Alberta?
Tony
--------
Tony B.
Kolb MKIII C
Rotax 582
C Gearbox 3.00:1
WD 66" 3 Blade Prop
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=293575#293575
Message 9
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Subject: | Re: AEROSHELL OIL SPORT PLUS 2 |
No, but I looked up the price, and you can get Phillips Injex for half that much.
I have been using Injex since 1983 for over 1500 hours of 2 stroke time, and
have had zero problems. And probably every snowmobile dealer in Alberta has
it in stock.
Richard Pike
MKIII N420P (420ldPoops)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=293594#293594
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