Re: [RCSE] Antenna Follies

2008-02-10 Thread TJB
I've been using the Becker for years with no problems.  Anyone else use a 
Becker?

T
  - Original Message - 
  From: Robert Samuels 
  To: soaring@airage.com 
  Sent: Thursday, February 07, 2008 5:40 PM
  Subject: [RCSE] Antenna Follies


   I had a transmitter antenna problem last year.  My Futaba 8 U has a Smiley 
Rubber Ducky antenna.  This attaches by means of a spring loaded bayonet mount. 
 Due to the design the spring loading allows the mating pin to flex back and 
fourth a bit.  After years of use I found the pin had broken off and that I had 
been flying with the antenna connection just barely touching.  I think that is 
what caused the crash of my Organic at last years Nats.  

  So I bought a new Rubber Ducky antenna assuming I would get a few more years 
of use before it failed.  I was wrong.  I just checked it and found it had 
failed the same way.  After only a few months of use.  Probably due to all the 
HL flying I've been doing which causes a lot of flexing of the spring loaded 
mount back and fourth during the launching process with it's attendant mating 
pin flexing.  

  Glad I caught it during a shop check.

  Robert Samuels .. St. Louis


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11:54 AM


Re: [RCSE] Antenna Follies

2008-02-09 Thread aero22
I took my broken 8U antenna, cut it off just above the
case exit point and than soldered a length of flexible
ext. cord wire to the inside of the antenna tube.
I cut it off at the original length of the fully extended
antenna, sweated the end than dipped the end in plastidip.
I used heat shrink to make a 3 layer strain relief where the flex wire
exits the old antenna shaft and added about 6" of .010 music wire under
the last 2 layers to stiffen the base a bit.
The antenna just hangs vertically (best orientation) and I wrap
it around the tx for storage. There is no range reduction, maybe an 
improvement.
I have flown over a mile away with this rig and have never had
range issues. (I have stepped on it a few times though...)

MM
Aerofoam
  - Original Message - 
  From: Robert Samuels
  To: soaring@airage.com
  Sent: Thursday, February 07, 2008 2:40 PM
  Subject: [RCSE] Antenna Follies


   I had a transmitter antenna problem last year.  My Futaba 8 U has a 
Smiley Rubber Ducky antenna.  This attaches by means of a spring loaded 
bayonet mount.  Due to the design the spring loading allows the mating pin 
to flex back and fourth a bit.  After years of use I found the pin had 
broken off and that I had been flying with the antenna connection just 
barely touching.  I think that is what caused the crash of my Organic at 
last years Nats.

  So I bought a new Rubber Ducky antenna assuming I would get a few more 
years of use before it failed.  I was wrong.  I just checked it and found it 
had failed the same way.  After only a few months of use.  Probably due to 
all the HL flying I've been doing which causes a lot of flexing of the 
spring loaded mount back and fourth during the launching process with it's 
attendant mating pin flexing.

  Glad I caught it during a shop check.

  Robert Samuels .. St. Louis


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  Helping your favorite cause is as easy as instant messaging. You IM, we 
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[RCSE] Antenna Follies

2008-02-09 Thread Robert Samuels

 I had a transmitter antenna problem last
year.  My Futaba 8 U has a Smiley Rubber Ducky antenna.  This attaches
by means of a spring loaded bayonet mount.  Due to the design the
spring loading allows the mating pin to flex back and fourth a bit. 
After years of use I found the pin had broken off and that I had been
flying with the antenna connection just barely touching.  I think that
is what caused the crash of my Organic at last years Nats.  

So
I bought a new Rubber Ducky antenna assuming I would get a few more
years of use before it failed.  I was wrong.  I just checked it and
found it had failed the same way.  After only a few months of use. 
Probably due to all the HL flying I've been doing which causes a lot of
flexing of the spring loaded mount back and fourth during the launching
process with it's attendant mating pin flexing.  

Glad I caught it during a shop check.

Robert Samuels .. St. Louis

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