Vintage VFO Kit

[MIDSOUTH]

Try to find a manual for this obsolete kit.

 

[ronsimpson]

Read this. LTC1799
The demo board and resources are here. Demo
Very interesting paper. read this
Some where you might stumble into your board. Most of these boards are copied from the data sheet or other recourses.

 

[schmitt trigger]

That kit is old!
Back when all the board kits didn’t come from Alibaba or Ebay.

 

[MIDSOUTH]

Thanks to all those who responded to my post. I had exhausted all my resources, now I have a new direction.

 

[augustinetez]

Just be aware the LTC1799 is but a toy generator, they are temperature and voltage sensitive and drift all over the place, not useful for anything serious.

 

[Tony Stewart]

That old CMOS Astable or Relaxation Oscillator can also be done with simple logic gates like this.

You can change any value here with your mouse wheel.

 

[MIDSOUTH]

With the information I've found so far from members like yourself is that there are much more reliable VFO circuits out there that are more stable and not prone to drift.

 

[Nigel Goodwin]

With the information I've found so far from members like yourself is that there are much more reliable VFO circuits out there that are more stable and not prone to drift.

You may as well build it as you've already got it, just to play with

However, as you specify 'VFO' I presume it's for a transmitter/receiver, and you don't really want a resistor controlled oscillator for that, nor do you want a square wave output.

'VFO' isn't one of the suggested applications on the datasheet.

 

[MIDSOUTH]

You are correct, even though it says VFO on the package obviously its not suitable for that. But, as you say, I might as well build it as a learning tool while I have it.