Its hooting you were right. I removed the noise head and put a load on
it and I can see a descrete frequency that has an 8dB noise figure. This
will be the frequency at which it's oscillating.

Do you have anything with a known NF that I can check as a reference.
I'll send it straight back to you.

__________________________________________________

73

Conrad G0RUZ IO93FR


North Wakefield Radio Club

__________________________________________________
On 19/07/2013 06:38, Graham D wrote:

2.When I measure noise figure I see good results on the gain but the
noise figure seems high. For instance my HA8ET Extra 2 LNA reads about
1.4dB whereas I am pretty sure that it is much better than this.

it's all a lot simpler than long convoluted theories....

the pre amp is oscillating

Graham 'MBI 'VHX



------------------------------------

Yahoo! Groups Links

------------------------------------

Yahoo! Groups Links