[RTTY] bandpass filters

[Jeff AC0C]

The best adjacent band rejection I have measured is off the Array Filtermax 
6- band unit.  Amazing.  They will run 200w just fine.

I run the 5B4AGN units here which don't quite have the same rejection 
characteristics as the Filtermax but (discounting your labor) are much more 
affordable.  They also use custom-built RF-spec caps and I think are 
probably indestructible even into squirrely SWR up on higher bands (the 
filtermax units use paralleled ceramic discs).

The Dunestars are cheaper but are a build quality lower.  Similar in 
performance to the 5B4AGN filter.

The ICE units should not be used as they have a reputation for failing on 
high bands.

K9YC had a pretty good comparison in NCJ a couple of years back which covers 
all of these save the Filtermax.  If you are going to lay out the bucks for 
this and are are serous about So2r it's well worth hunting the article down.

73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie

-----Original Message----- 
From: WW3S
Sent: Friday, March 18, 2016 6:20 PM
To: rtty at contesting.com
Subject: [RTTY] bandpass filters

Whats everyone using for low power rtty contesting?

Anyone using Dunestar and pushing 100w to them? How about the newer Hamation 
419?

Or does everyone throttle back to 80-85w, or push 100w?

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