Received my 750 2 days ago and am ready to return it. Here are the problems - anyone else experience the same? :
1) On SW, a broad buzzing racket approx every 230 kHz. Not heard on any other receiver so probably internally generated.
2) Very noticeable audio distortion on SSB unless atten and/or RF gain is really reduced.
The rotatable loop antenna can use a bit of deoxit cleaner on the contacts. While inside doing the resistor mod, you can get into the contacts of the loop and clean it up a bit.3) On LW and MW it is almost dead if atten is set to 0. Must switch to -10 to hear anything.
Yep. One reason I ran it solely from batteries. It has very low current draw, so batteries last a long time, and almost negligible if using rechargeable D's. Be careful with the prongs on the battery door, as they are soft plastic and you can break or distort them if you manhandle the battery door.
The rotatable loop antenna can use a bit of deoxit cleaner on the contacts. While inside doing the resistor mod, you can get into the contacts of the loop and clean it up a bit.
I like my new Grundig 750 a lot. I only wish they had put all of the antenna and power supply connections on the back. Or at least all on one side.
Aside from a defective unit, is it possible you are getting overload / desense on MW requiring a 10db attenuation or more?
Worst case - does it matter at all when you rotate the loop antenna with no attenuation active, or is it still just seemingly dead no matter what?