The longer the TX Antenna the better it is for the sailplane. I have seen many sailplanes that have added on wire to their RX Antenna just to get better range. (England) but we here (USA)can get so high just a speck in the sky and still have control of it with our stock radios from the Hobby Stores. You really have to have a need to make them shorter. Like Slope flying, Hand tossing, Discuss tossing of Hand Toss. I can see that working for most people. They are not flying for a long range flight, thermal duration, cross country. Just trying to help clear up things.
Larry Taylor KF6JBG CD for the Visalia Fall Soaring Festival 2005 Oct 1st & 2nd Home: [EMAIL PROTECTED]
----- Original Message ----- From: <[EMAIL PROTECTED]>
To: <soaring@airage.com>
Sent: Wednesday, March 23, 2005 9:18 PM
Subject: Re: [RCSE] 51 MHz base loaded antenna for 9303
Larry Taylor wrote:
Remember to do a
Range check( Full Ant ) before you install the Antenna by having some one
drive with your radio and find out where it starts to fail.( a 2 way radio
works good here) Mark that location and do the same with your new Antenna...
Don't forget to take the different directivity properties of the two antennas
into consideration. A full length antenna might radiate most of its energy to
the side while a shortened antenna might radiate more energy off the tip.
When we fly, I think we tend to point the tips of our antennas in the general
direction of our planes.
I would repeat Larry's range check procedure several times at different locations, holding both the plane and radio in different positions, before drawing conclusions. It might also be good to try different planes or receivers. Radio propagation can be strange sometimes, especially when reflection off of ground objects is involved.
Here's another thought: A line-of-sight test would be best here, but would probably be difficult to achieve at long distances on the ground. Since you're testing the transmitter and not the receiver, It might be best to impair the receiver as much as possible, perhaps by rolling up the antenna wire.
Mike
--
Winch Solenoid Safety Buzzer - http://www.vvsss.com/buzzer/
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