[HBR] Relay switched coils?

[Kees & Sandy]

You are right, shortest wire lengths, keep the HI-Q, simplicity. Adding anything more introduces contact resistance, stray capacitance, increased noise, increased physical size, etc.
73 Kees K5BCQ 

---------- Original Message ----------
From: Ian Wilson <ianmwilson73 at gmail.com>
To: HBR Receiver List <hbr at mailman.qth.net>
Subject: [HBR] Relay switched coils?
Date: Thu, 27 May 2010 10:38:14 -0700

I assume that one reason for the HBR using plug-in coils was to get high Q,
thus high selectivity, good image rejection, etc, in the front end. Using a
traditional bandswitch involves long wires (somewhere), thus loss and stray
capacitance.

Would using small relays instead of a bandswitch could provide sufficiently
good connections and low strays to preserve the good performance of an
HBR-type
front end without plug-in coils?

73, ian K3IMW
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