[Boatanchors] Heathkit HW-100 CW Filter

[Radio AI2Q]

Bill, what Bob says is true, however I have found that the local 
oscillator xtals in Heath gear age and change over the years. It's no 
big problem to live with, but you could compensate for it by adding 
small trimmer caps to the oscillator circuits. I was a Heath Co. 
employee as a service technician for quite a few years back in the 197Øs.

Vy 73, AI2Q, Alex


On 2/12/2019 12:41 AM, Bob Groh wrote:
> As far as I know, no special alignment needed.  Just plug it in and go.
>
> Bob Groh, WA2CKY
>
> On Sat, Feb 9, 2019 at 7:22 AM Bill Stewart <cwopr at embarqmail.com> wrote:
>
>> GM All,
>> I just recently acquired a HW-100. I noticed in the HW-100 manual that the
>> SSB filter
>> could be replaced with a CW filter, p/n SBA-301-2, which I would like to
>> do. Is there any
>> special alignment required or is it a remove and replace operation. I
>> found this one on
>> ebay: " Heathkit 400 Hz CW Crystal Filter 404M284P363 SBA-301-2 SB-301 ".
>> The
>> SBA-301-A number does not appear on the item, just the 404M...etc. The CF
>> is 3395.4khz
>> Appears, from the info, it might be for a SB-301 also....just wondering if
>> it would work. Any
>> assistance would be appreciated.
>> 73 de Bill K4JYS
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