Although the RA17 is a VERY good receiver, this person must have had a bad
6790/GM. Also the 6790 does not have Sync detection, so I am not sure where
this eBay seller got that misinformation from. I have a
6790/GM.......typically, the 6790s have crystal filters, although LSB/USB
mechanical filters were an option. I do have this filter set, but haven't
bothered to install them. The crystal filters work fine. Also, the 45MHz
roofing filter in the 6790 is at least an 8-pole unit and a quad JFET ring
mixer is used. This receiver has an IP3 of +30dBm, so it isn't a slouch.
More eBay hype....................................it would be nice if this
person could at least get its facts straight. Another thing.....how did this
person measure the S/N ratio, with a Noise Figure meter? With your typical
15db excess environmental noise, any differences in sensitivity would be
masked. It could be that this person was talking about audio quality.
Those old tube units do sound very good.

Pete

"Lucky" wrote in message
...
On Ebay

http://cgi.ebay.com/ws/eBayISAPI.dll...98597 70&rd=1

Lucky