[HBR] Dissipation factor of materials

[Ron Barlow via HBR]

True, the "Q" of the RF and mixer tuned circuits won't impact adjacent channel selectivity, but it will affect the signal/image ratio, front end gain, and in the case of the RF stage, the receiver noise figure.
                          73 de Ron                        

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On Sat, 11/29/14, Brian Burns <brianburns1066 at gmail.com> wrote:

 Subject: Re: [HBR] Dissipation factor of materials
 To: "'HBR Receiver List'" <hbr at mailman.qth.net>
 Date: Saturday, November 29, 2014, 1:25 PM
 
 Hi Brian,
 
 Most of the tubular items,
 extension pieces, tail pieces, p traps, etc are
 made from polystyrene.  They are all no
 pressure items and are not used for
 pressure.  PVC drainage on the other hand is
 made of PVC and is not as
 suitable for coil
 forms.  
 
 JamesF
 
 
 Hello
 James,
 
 Well dog my cats!
 Not only did I not know that, I never would have
 suspected