opinions on HIFLI - Diode based phasing ?

[Martin Czech]

> Have you ever seen a phaser that used ordinary diodes as voltage 
> controlled resistors?
> My first thought would be. "cheap design, bad SNR", but maybe it's not 
> as simple as
> that.
> The famous EMS HIFLI (for which people pay insane prices at the 
> moment) obviously
> uses dides as voltage controlled resistors, but not only one or two 
> per stage. 
> 
Any schematic of this box available ?

Would help a lot.

m.c.