[Boatanchors] A simple 88.5Hz tone circuit needed

[rbethman]

Bill, Et al,

The first thing that hasn't been factored into the costs, is his QTH.  
Note his email address: <yonglee at yonsei.ac.kr>

Historically, electronics are very inexpensive in Korea.  I have no 
doubt whatsoever that Mr. Yong can obtain and build the circuit for 
close to a $1.

I have shopped their electronics market area on many instances.

Bob - N0DGN

On 5/25/2010 2:36 PM, Bill Cromwell wrote:
> Yong Surk Lee Said:
>
> Thank you everybody. I found a simple 88.5Hz tone generator circuit
> using a single 567 integrated circuit. It can be built less than about
> $1 parts.
> de HL1FB/WW6N
>
> Hi,
>
> The best price I found with a short search was at Digi-Key for 1.67 each
> (plus shipping of course). So if capacitors and resistors are also
> needed it's not going be under a dollar at all. It should still cost
> something less that buying ctcss encoder/(decoder). I wonder how much
> less it will cost than the product that is programmable for all known
> ctcss tones with both encode and decode.
>
> Let us know how well this thing works for you. I'll dig out the prices
> for myself and do the math/evaluation. I see that chip is available for
> the same price in a surface mount package that might help it fit in a
> small space (old hand-held like my Icom 2-AT). Comm-spec can do the
> encoder in the 30-40 dollar price range. If I can do it under ten bucks
> and it works I will make one.
>
> 73,
>
> Bill  KU8H