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404-200




 
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Roy K8VWX
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Pr. 4 -1000s Mod Pr. 5868


« on: March 14, 2005, 10:04:58 PM »

There is a heathkit filter for sale on ebay # 404-200 and the seller has no idea what it is ( cw-ssb-am ). Can anyone help??? :roll:  Just put a AM filter in my freebee SB-301 - Not too bad on AM but not terrific either.
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W8ER
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« Reply #1 on: March 15, 2005, 12:45:11 AM »

Roy,

I've searched the documentation that I have here and finally ended up on Google. Here's an ad that I found:

Quote
Looking for filters for a heath 301 receiver . The filter numbers are AM-
404-314 AND THE CW- is 404-284. please get back if you have one or both.
thanks


That would leave only one possibility, the SSB filter. That is backed up by a picture that shows the 404-200 mounted in the middle position.

I hope that helps a bit,

I have a couple of SB-303's here. One is loaded with filters, including the AM filter. It's as you say, not a great one but not bad either. It sure won't give you hi-fi but it can sort out the crap pretty nicely. There are several very serious attempts to make or modify  one of the standard filters to make a 6 khz one. I have doc here somewhere that gives the details on how to do it. That would put it in the right category, and then teamed up with a nice little DX60 and an SB220 .. whew .. what a nice setup that would be!

--Larry W8ER
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Roy K8VWX
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Pr. 4 -1000s Mod Pr. 5868


« Reply #2 on: March 15, 2005, 06:31:29 AM »

Thanks Larry sorta thought it was the sideband filter. Guess they marked some of their filters with the specs. and others with only part numbers. Just thought if it was a CW filter I would fill in the last hole - HI. take care - 73
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