[Elecraft] OT: Scratchy Dot reducer for Bug type keys

Jim's Desktop w0eb at cox.net
Tue Jun 3 20:48:13 EDT 2014


This is kind of a feeler email to see if there's any interest for a 
product I've sort of resurrected.  I don't know how many list 
subscribers use a Semi-Automatic "Bug" key for CW when most rigs have 
built in keyers now, but I have been hearing more bugs on the air 
lately, mainly amongst the QRO operators and I've heard some really 
excellent sounding ones and some really horrible sounding ones.  Not 
talking about the operator's "fists", but the really scratchy dots 
inherent in the mechanical contact on the vibrating "Dit" generator.  
This contact is usually a bent, flat spring and the cause of the 
"scratchies" is extra contact bounce on contact break as the spring 
becomes free to vibrate on it's own as the contacts separate.

Ted McElroy, who held the CW receiving record for many years and some 
say that record hasn't been officially broken yet, came up with a 
mechanical device that he incorporated into the contacts on the bugs he 
marketed back in the 1920's and 30's.  I've come up with a hand made 
version of this "dot contact stabilizer" that eliminates the need for a 
capacitor across the terminals of most bugs and almost completely 
eliminates the scratchy dot syndrome when it's properly adjusted.

I've been using one on each of my 4 bugs and it makes them sound really 
good on the air (within the limitations of my "fist") and it makes the 
bugs much easier to send decent CW with.

I've decided to market them on a limited basis as I have to hand make 
each one and I'm not looking to get rich selling them, but I've hit on a 
$20 postage paid price per device within the US and $20 plus whatever 
shipping costs for international customers on a case by case basis.  
They are made mostly of aluminum bar stock with a couple of set screws 
and the adjustable piece of music wire to tame the contact.  Included in 
the price are complete adjustment instructions and the proper Allen 
wrench for the set screws.

Preferred payment is PayPal but I will also accept USPS money orders 
from US Domestic Customers.  PayPal only from international customers 
and they must have a PayPal account and a PayPal verified address.

Email me off list for ordering instructions or for further details.

Jim Sheldon - W0EB


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