[ARC5] ARC-5/SCR-274-N IF Coil Mod

[hwhall at compuserve.com]

I had done some googling on plastics when thinking about coil supports and the polystyrene used in Q-Dope, plastic peanuts, and model airplanes was about the most completely RF-transparent common plastic that anyone had reported on.
 

 Wayne
WB4OGM



-----Original Message-----
From: John Hutchins <jphutch60bj at gmail.com>
To: arc5 <arc5 at mailman.qth.net>
Cc: hwhall <hwhall at compuserve.com>
Sent: Sat, Mar 8, 2014 6:15 am
Subject: Re: [ARC5] ARC-5/SCR-274-N IF Coil Mod

                     
     Wayne, Dplatt - and others that may be interested.
     
     "Q-Dope (or           homebrew equivalent) have enough strength for the job?"? I           would think so.
     
     I wish I had saved the article +> 7 years ago
     To many hits on Google - I seem to remember that someone did an     extensive expirment with many kinds of glues to fix the windings on     a RF Coil, comparing to an Air wound coil;
     
     
     Boonton 260-A Q Meter
     http://crosemradiomilitari.altervista.org/wp-content/uploads/2013/10/Boonton-260-riparazioni1.pdf??     Search for? E6000
     ?or this:
     http://www.w7ekb.com/glowbugs/Military/SRR_Radios/coils.htm?? Search     for? E6000
     ?or this:
     https://groups.yahoo.com/neo/groups/heathkit/conversations/topics/15221??     Search for? E6000
     
     Later -
     Hutch
     
     
     On 3/7/2014 9:54 PM,       hwhall at compuserve.com wrote:
     
     Would             Q-Dope (or homebrew equivalent) have enough strength for the             job? Since it's just a dissolved styrene plastic, it ought             to have nearly zero effect, right? Or will its solvent make             trouble?
                   
       
        Wayne
       
       WB4OGM
         
       
       -----Original Message-----
       From: John Hutchins <jphutch60bj at gmail.com>
       To: arc5 <arc5 at mailman.qth.net>
       Sent: Fri, Mar 7, 2014 6:39 pm
       Subject: Re: [ARC5] ARC-5/SCR-274-N IF Coil Mod
       
       
        
         
         Dplatt -      On 3/6/2014 3:35 PM, D. Platt wrote:         "I used a drop of epoxy to the upper and lower bobbins and the    long screw."           Try E6000 instead, did not mess with the Q-factor.  Someone did a    study on what modern glues to use when making-holding wire Coils to the    Coil form.       It is noline somewhere.   Hutch      ______________________________________________________________   ARC5 mailing list   Home: http://mailman.qth.net/mailman/listinfo/arc5   Help: http://mailman.qth.net/mmfaq.htm   Post: mailto:ARC5 at mailman.qth.net      This list hosted by: http://www.qsl.net   Please help support this email list: http://www.qsl.net/donate.html