Re: LF: 136kHz project cancelled

[G0MRF@aol.com]

In a message dated 1/22/04 8:00:11 PM GMT Standard Time, knaap159@zonnet.nl writes:

> To give you some examples from problems I ran into:
>   
> No suitable X-tals to build VXO 's or something with an divider, so I decided
>  to build an VFO on 1.37MHz followed by an 4017 to divide by 10.
>  VFO worked perfect but the 10-diveder just wouldn't work!!!!
>  I spend hours and hours to get it running, tried several different IC's
>  (I expected speed problems etc) all with no result.........
>  1.37MHz in ......NOTHING out................
>  It was a sinple circuit : pin 8,13,15 to ground, VCC on 16, 1.37MHz on pin 14,
>  and output at pin 12...... so stupid simple, that it really is amazing that things are
>  not working.
>   


Sorry to hear of your problems.  Hope you'll decide to give it another try in time for the next LF season next September.

For  info:

My site has 2 crystals 8.000MHz and 8.274MHz.  
It also has the design for 2 VXO's using a two gates in a 4011 chip and a simple mixer and buffer using the remaining two. All of which can be put together in less than an hour.  

The 274kHz can be divided by 2 in a 4013 and then you can amplify with one 1 Euro FET for 25Watts or a set of four 5 Euro ones with a big PSU for 600 Watts.

There's always a solution somewhere out there and frequently the reward enjoyed is proportional to the effort made.

Good luck es hope to see you on the band next season.

73

David