Bill,
If TX antenna (such as helical or base loaded) cannot be collapsed for
ground range check, consider collapse the Rx antenna for similar
effect.
Rx antenna collapse may be effected in two ways.
One, allow one inch at the root left behind cut and reconnect the wire
antenna with a servo connector using only one pin out of two or three
pins. Disconnect the wire antenna in a ground range check. When done
recover the Rx antenna to stock condition.
Two, bundle the Rx antenna on its own and tin foil rap it to about
0.5" diameter, leaving zero to 0.5" root section exposed. Run your
ground range check like that. When done recover the Rx antenna to its
stock condition.
BTW, for your own interest, you may like to range comparison of
alternative TX antennas reference to the stock, and turn the
difference into percentage. The percentage reduction information in a
ground range check is similar (but identical) to an in flight % range
reduction. Remember your link limitation and go fly with fun.
YK Chan
Seattle
----- Original Message -----
From: Bill Harris <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, August 05, 2000 1:18 PM
Subject: [RCSE] Base-loaded antenna range check
> Oh, no. Not another DuckyDebate. :-O
>
> I got a JR base-loaded antenna for my 8103 for use on the slope and
hand-tossing. What is the proper way to range check an antenna like
this? It would seem to me that "no antenna" would make the RF output
unhappier than a collapsed antenna.
>
> I think that usual practice will be to keep the "stock" (extensible)
antenna on the radio (in the case, between filghts) and remove that
antenna and screw on the base-loaded antenna at the field. I'm
thinking that the usual antenna-collapsed range check would suffice.
>
> Somewhat related, I'm finishing my Chrysalis HLG and installing
avionics this weekend. Since the fuse is short, it is suggested that
several turns of the antenna be wrapped around 1/16" scrap balsa to
take up the excess. How might this affect the range of the Rx? I'm
trusting, but want to check, especially since I'm also using a short
Tx antenna.
>
> --Bill
>
>
>
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