I would have to agree. The reason I originally wrote is that I pushed the
Horizon tech rep a bit about this when he suggested that I could "just drop
in another JR crystal", and accepted it after he insisted it was ok.
"Should'a known better..."
Thanks - I guess I'll pick up a couple of tx modules.
Regards,
Joel
> -----Original Message-----
> From: Bailey, Donald F [mailto:[EMAIL PROTECTED]]
> Sent: Monday, January 17, 2000 12:04 PM
> To: [EMAIL PROTECTED]; Bailey, Donald F; Scale Soaring; 'David
> Crutchley'; 'John Derstine'
> Cc: soaring
> Subject: [RCSE] RE: JR8103
>
>
> Now, I was told by some knowledgeable types that the new 8103
> tranny can accept crystals across the entire R/C band without
> any problems, and I have been using ch 23 and ch 58 crystals in
> my module with no problems whatsoever.
>
> Folk knowledge says that one should never vary frequencies by
> more than two or three channels either side of factory-tuned
> channel, as John says below. I guess I trusted the above
> information enough to try it (more than once) and got lucky. No
> glitching, not even a hiccup. Maybe I should have the tranny
> tested with both crystals to see if it is within acceptable rf
> limits for each frequency before flying on the off-channel
> again. The Puyallup Model Expo is coming up on Feb. 5th, and
> the AMA does while-u-wait testing at their booth, so I'll let
> you all know the results soon.
>
> I sure do agree with John's caution below, about having to
> remember which crystal you have installed. I adopted the habit
> of flagging my antenna base for each frequency, so I don't
> forget, but sheesh, it would sure be easy to change memories and
> forget to change crystals, ya know? Your plane might not
> respond to the tranny signals, but you could end up shooting
> someone down before you discovered why.
>
> Don Bailey
> Seattle Area Soaring Society
>
> > ----------
> > From: John Derstine[SMTP:[EMAIL PROTECTED]]
> > Sent: Monday, January 17, 2000 3:08 AM
> > To: [EMAIL PROTECTED]; Bailey, Donald F; Scale
> Soaring; 'David Crutchley'
> > Cc: soaring
> > Subject: RE: JR8103
> >
> > Scale Soaring
> >
> > If you swap crystals in low band or high band stay within a few channel
> > numbers, the "consensus" is that is alright. I am surprised Horizon
> > recomended this, although it is done by some folks.
> > Its kind of like the guy who buys a 1500 dollar glider then
> puts $15 dollar
> > servos in it. It will probably work, but why take the chance. Just an
> > opinion from the cautious side. Most guys I know swap modules,
> not xtls.
> > It's easier, and subjects the fragile crystals to less banging
> about.The
> > really important factor is when you go to an impounded fly in,
> you will most
> > likely have the right channel number on your module. If you
> forget, and the
> > impound guy or gal doesn't make you pull your radio apart to
> check then it
> > is up to your good memory what channel your on.
> >
> > John Derstine
> > E-mail; [EMAIL PROTECTED]
> > Scale Soaring: http://www.Geocities.com/~scalesoar
> >
> >
> > -----Original Message-----
> > From: Joel A. Foner [mailto:[EMAIL PROTECTED]]
> > Sent: Monday, January 17, 2000 1:32 AM
> > To: John Derstine; Bailey, Donald F; Scale Soaring; 'David Crutchley'
> > Cc: soaring
> > Subject: RE: JR8103
> >
> >
> > Scale Soaring
> >
> > That's interesting... I spoke with a Horizon tech rep last
> year and they
> > recommended just installing a new JR crystal. I switched from
> ch 46 to ch
> > 31 and have had no problems. Now I wonder if this was the
> right move...
> >
> > Regards and thanks for the tip - I'll call them again to check
> this out.
> >
> > Joel
> >
> > > -----Original Message-----
> > > From: John Derstine [mailto:[EMAIL PROTECTED]]
> > > Sent: Friday, January 14, 2000 8:07 PM
> > > To: Bailey, Donald F; Scale Soaring; 'David Crutchley'
> > > Cc: soaring
> > > Subject: RE: JR8103
> > >
> > >
> > > Scale Soaring
> > >
> > > Be leary of swaping just crystals(in the Transmitter),
> Horizon reccomends
> > > swapping modules as the RF decks are tuned to the crystal. It
> > > operates as a
> > > tuned entity. If you are flying valuble models whats a few
> more bucks. RX
> > > crystal swapping is less of a problem.
> > >
> > >
> > > -----Original Message-----
> > > From: Bailey, Donald F [mailto:[EMAIL PROTECTED]]
> > > Sent: Friday, January 14, 2000 5:23 PM
> > > To: Scale Soaring; 'David Crutchley'
> > > Cc: soaring
> > > Subject: RE: JR8103
> > >
> > >
> > > Scale Soaring
> > >
> > > David,
> > >
> > > I did a gushing, glowing review of th 8103 radio in the most
> > > recent issue of
> > > S&EM. I have both the X347 and the 8103, and they are both
> fine radios.>
> > > You will not regret upgrading to the 8103, since the additional
> > > features are
> > > well-worth paying for. I particularly like the digital
> trims and the ten
> > > model memory. Plus, you can swap out crystals without having to
> > > buy a whole
> > > new module for each frequency.
> > >
> > > The 8103 will do everything you need except sort the laundry. I
> > > say go for
> > > it.
> > >
> > > Don Bailey
> > > Seattle Area Soaring Society
> > >
> > > > ----------
> > > > From: David Crutchley[SMTP:[EMAIL PROTECTED]]
> > > > Sent: Friday, January 14, 2000 12:55 PM
> > > > To: Scale Soaring
> > > > Cc: soaring
> > > > Subject: JR8103
> > > >
> > > > Scale Soaring
> > > >
> > > > Do any of you 8103 owners have a complaint about the 8103? I
> > > am about to
> > > > upgrade from my 347.
> > > > Thanks
> > > > David
> > > >
> > > >
> > > >
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