Receivers - Range - Low/High Banded

[Wayne Galligan]

The range dual range on Futaba helps prevent any range problems that could
occur from slightly misaligned tuning.  I have jumped several frequencies
with no problem but not more then 3 up or down.   It is always best to have
it tuned to the specific frequency that you are using for optimum
performance.   I have used the HiTech receivers and they don't even specify
a low/high band with good results also with my Futaba transmitter.  The
lower priced receivers seem to be a little more sensitive to different types
of interference.  Your range can vary depending on your setup, engine
resonance, materials in construction, metal to metal noises, length of wire
leads, shortened antennas... on and on.    I have experienced problems with
carbon fiber fuse that had metal pull/pull wires.  And when I went to a
pushrod and kevlar the problem went away.  When range checking make sure you
are not any where near a metal table or metal fence post, flag pole, etc.
I have had people hold my airplane that I think caused reduce range due to
their magnetic personality...heh! heh!  Your mileage may very.

Wayne G.



----- Original Message ----- 
From: "Brian Young" <b4598070 at yahoo.com>
To: <discussion at nsrca.org>
Sent: Tuesday, November 18, 2003 9:09 AM
Subject: Receivers - Range - Low/High Banded


> Im interested in learning about the receiver range.
>
> Recently I had a reciever from Futaba a 149, which was
> involved in a crash. This receiver had range with the
> antennae collapsed to 400 feet or better. The receiver
> was damaged beyond repair, and Futaba Service center
> offered an exchange at a discount. So I received the
> new receiver which range checks to 100ft w/ antennae
> collapsed, this is beyond Futabas specification so I
> fly it. Seems fine. This receiver was received w/
> crystal but was tagged low band. So Futaba has
> receivers available low band/high band so they dont
> have to stock them w/ crystals. Does this tend to
> compromise the range somewhat for various bands (ie,
> would range benefit from tuning to the specific
> frequency rather than to a point which perhaps covers
> a 25 channel range)?
>
>
> (Ive had a similar experience but in reverse on two
> other receivers.)
>
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