[NSRCA-discussion] SPEKTRUM modules for JR transmitters

[Jon Lowe]

There is a built in hex on the back side of the connector that fits 
into a hex recess in the case.  If the outer nut comes loose, the 
connector can recess into the case, releasing it from the lock, and 
twist the wire.

CA debonder works great.  I'm only talking about a drop of gap filling 
CA.


Jon Lowe


-----Original Message-----
From: Randall Bearden <rbearden56 at bellsouth.net>
To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
Sent: Sun, 10 Jun 2007 7:00 pm
Subject: Re: [NSRCA-discussion] SPEKTRUM modules for JR transmitters


On 6/10/07 8:14 AM, "JonLowe at aol.com" <JonLowe at aol.com> wrote:


In a message dated 6/9/2007 9:53:50 AM Central Daylight Time, 
rbearden56 at bellsouth.net writes:

You must be very careful when dealing with these connectors they cannot 
be
over tightened without damaging the connector and severely degrading the
transmitters output.  When you are dealing with the Gigahertz range most
connections are N-type OR SMA and you only need to torque then to ABOUT
6inch/oz (FINGER TIGHT).  If you over tighten them you will damage it 
and
then your output will drop due to reflected energy back into the 
transmitter
module.  If you treat it like the old stuff it get bad quickly.  Don't
superglue it there is a compound to prevent the connectors from coming 
loose
that will not ruin it like super glue.

Randy,
You misunderstood what retaining nut I am talking about.  It is NOT a 
nut that completes part of the RF circuit. It is a nut that retains the 
body of the connector in the SPEKTRUM housing, just like the nut that 
retains an RJ-6 connector in the back of a cable box or a TV.  If it 
comes loose far enough, it can allow the whole connector body to 
rotate, pulling loose the connection on the circuit board.  It is the 
flat nut shown at the bottom right of the picture below that retains 
the connector to the plastic housing.
 
Jon Lowe

 



------------------------------------------------------------
See what's free at AOL.com 
<http://www.aol.com?ncid=AOLAOF00020000000503> .

------------------------------------------------------------
_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion


Jon,

OK now I see what you  are talking about.  Does the connector have a 
flat spot to prevent the connector from turning when the female 
connector is attached?  I agree that if this is not secure then the 
internal connection could be broken or frayed.  Now if you want to have 
the advantages of 2.4 GHz and the programming of an advanced 12 channel 
transmitter then you should dump the JR conversion and go with the 
FUTABA pure bred (LOL).  If you use super glue, then what happens if 
you need to remove the connection for service or changing a cracked 
plastic case, like when you slam the JR on the ground in frustration 
(LOL)?  Try some tread lock instead, so when your hands are shaking it 
won’t let the nuts and bolts come loose. (More LOL)

Good Luck at the NATS Jon,

Randy


_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion


________________________________________________________________________
AOL now offers free email to everyone.  Find out more about what's free 
from AOL at AOL.com.
=0