Modular construction (was RE: [Elecraft] K2 receive sensitivity)

[d.cutter at ntlworld.com]

Yes, all in a staight line should be *easy* it's when a square format is required that things get interesting.

David 
G3UNA

> 
> From: "Geoffrey Mackenzie-Kennedy" <gmk at gm4esd.fsworld.co.uk>
> Date: 2007/01/19 Fri AM 11:52:40 GMT
> To: "David Cutter" <d.cutter at ntlworld.com>
> CC: "Elecraft Discussion List" <elecraft at mailman.qth.net>
> Subject: Modular construction (was RE: [Elecraft] K2 receive sensitivity)
> 
> Space is certainly a factor unless the designer is prepared to employ 
> shielding, filtering and ground fencing. I believe that construction using 
> shielded modules has a great deal to offer, and I am not convinced at all 
> that in the long run the method is 'too' expensive *if* equipment 
> performance is used as the yardstick. Certainly easier to add options 
> provided that some system design thinking had been done at the outset. 
> Small high performance filters in my experience require some form of 
> shielding between resonators and great attention to leakage past the filter, 
> but it can be done e.g. 14 pole HF crystal ladder filters with the crystals 
> side by side in a straight line.
> 
> 73,
> Geoff
> GM4ESD
> 
> 

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