[Amps] 8877 input Z

[Bill Turner]

ORIGINAL MESSAGE:          (may be snipped)

On 3/27/2014 7:55 AM, Hardy Landskov wrote:
> I am looking for the input impedance of an 8877. I found one source and that was K6DC's (SK) article years ago that said it was 54 ohms with no frequency dependency or reactive component. The input C is 42 pF according to the data sheet. So I will assume I can use 54 ohms in parallel with 42 pF. Anyone have anything different?
> 73 Hardy N7RT

REPLY:

I can confirm that is a good value. In my homebrew amp I used a simple 
LC parallel resonant circuit with a Q of about five on the input and got 
an input SWR of no more that about 1.3:1 from 160 through 10 meters.

73, Bill W6WRT