[R-390] HP 8640B Question

[Robert Nickels]

On 2/19/2010 7:14 AM, Jerry K wrote:
> HP 8656B<snip>  has been the best test equipment money I've ever spent.
>
>    
Gotta chime in with Jerry on that!   My 8656B came about when analog 
cellphone factories had to re-tool, and I suspect there are many 
off-lease and available now that everything has gone digital.   Simply 
put, they are fantastic.  I've cross-checked the attenuated RF output 
and find it's dead-on, and there's nothing like being able to generate 
whatever frequency you want at any amplitude up to 1 volt with AM or FM 
modulation in 1% increments and know it's exactly what it's supposed to 
be - 100khz through 990 mhz.   Another nice plus is the protection 
circuitry on the RF output, which works very well (don't ask how I know 
this!)

Manual

Some have knocked the purity of the output but I've never found it to be 
an issue for what I  use an RF generator for.   And the 8640 it replaced 
also was properly recycled - I swapped it for another R-390A ;-)

73, Bob W9RAN