[Elecraft] [Bulk] 8 or5 Pole cw filters

[Edward R Cole]

Since I operate very little on HF, then why did I buy the 8-pole filters?

Because:
1.  I figured they had steeper skirts for extreme operating 
conditions where adjacent strong signals were encountered.  (very 
rarely happens in my neighborhood though a multi- super contesting 
station lies 10mi north of me).  But someday I may be operating 
portable/mobile in the lower-48 where it will be appreciated.

2.  I bought the KRX3 sub-receiver; matched filters were recommended.
3.  I figured it would help re-sale value, someday.

I bought:
13-KHz for FM (on VHF)
2.8-KHz (K3 required either 5 or 8-pole SSB filter)
400-Hz CW
2.8-KHz for KRX3.

I wrongly bought an extra 13-KHz filter for the KRX3, not thinking 
clearly that the KRX3 would not be used for FM - I sold it here on 
the reflector after realizing my error.

In practise I mostly use the 2.8-KHz roofing filter and set bw with 
the DSP, even on CW, which is mainly used for VHF or eme.  The 400-Hz 
filter does appear to improve the sensitivity when running 200-Hz on 
CW-eme.  Probably knocks down the noise bw of the receiver before the 
A/D converters.

I avoid the HF contests and only participate in the Elecraft 
Net.  Occasional psk-31 on 14.070, and very occasional general 
chatting on (mostly 20m).  99% activity is eme oriented which is 90% 
building/fixing and 10% operating.  QRV on 17-bands 600m/3cm.

73, Ed - KL7UW
http://www.kl7uw.com
     "Kits made by KL7UW"
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