Re: Grounded grid VHF front-end

In article <vgop30$in7$1@dont-email.me>,
pcdhSpamMeSenseless@electrooptical.net says...

 
HF receivers don?t have to have good noise performance because the
atmosphere is so noisy, and AFAICT they usually don?t.  Intermod is more of
an issue.
 
 

That is very true.  I have a 60 year old tube receiver and up to 10 MHz
I can hear any signal on it as I can on my year old Icom 7610.  However
the modern receiver does much better selecting a signal when there are
many signals on the band. My 50 year old Heathkit tube and transistor
receivers work just as well up to 30 MHz as the Icom as far as hearing a
weak signal if there are no strong stations near by.

It does not do much good to have a receiver with a sensitivity of .1 uV
when there is a noise of 1 uV all aound you if not more.

With all the man made noise in many locations 50 MHz is getting to be
very noisey and 150 MHz is starting to get that way.
At one time I had a modem that put  out a signal that was strong enough
to lock up my scanning receiver on one of the 2 meter repeaters I used. 
I was out in the country and not much around to give problesm but my own
house.