AW: [sdiy] sdiy, real ring modulator schematics

[Czech Martin]

> The other ring
> circuits I have seen used transformers.  Although, I would be willing to
> bet that you could probably do the same thing with ballanced op amp
> drivers and diff amps.
> 
	you bet, you're right! I have found a schematic in some
	old "Funkschau" isue, it was used there as correlation meter.
	Though the true ringmodulator circuit has many disadvantages
	it also has a special sound due to the many more sidebands.
	I think it is worth to consider this circuit.

	m.c.