[HBR] 24-5P Molded Coil Forms

Rob roomberg at ptd.net
Tue Nov 8 12:07:25 EST 2016


Can you point to any magazine article that shows how to build this SW-3?

On 11/08/2016 11:46 AM, Jim Hill wrote:
> At 07:32 AM 11/3/2016, Paul Dulaff wrote:
> If additional coil sales would reduce startup costs, I suggest you 
> also look into manufacturing National SW-3 coil forms.  The SW-3 was a 
> regenerative receiver sold in the early 30's, and is currently a very 
> desirable item.  It uses a 6-pin coil form with normal pin diameters, 
> but with different pin spacing (since the receiver was designed and 
> originally sold before 6-pin tubes were available).  If you are 
> interested, I'll provide details.
> Jim
>
> At 07:32 AM 11/3/2016, Paul Dulaff wrote:
>> All
>> Looking at the potential for tooling up, in a low cost way, the HBR 
>> coil form. This would be an exact piece, injection molded clear 
>> styrene with 5 pins, tin plated.
>> Looking at tooling cost and cost for pins, the piece price hits 
>> $10.00 each to recoup the setup and tooling costs for volumes in the 
>> hundreds of parts.
>> snip
>> Paul - WB2NMI
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