Jim,

The component came in that I need to try John’s last circuit change.  Once I put this paper behind me I’ll get them installed and see what happens.

73,

Juan

---

From: Jim Sanford [mailto:wb4gcs@amsat.org]
Sent: Sunday, July 22, 2007 4:23 AM
To: juan-rivera@sbcglobal.net
Cc: eagle@amsat.org; Bill Ress; Dave Black (Home); Dave Black (Work); Dave hartzell; David Smith; Don Ferguson; Juan.Rivera (Work); Samsonoff@Mac. Com
Subject: Re: [eagle] 70 cm Passband at -1 dB and -60 dB

I have some thoughts on this (ripple), after some research I did late last night.
More later.
73,
Jim


Juan Rivera wrote:

All,

I re-ran the -1 dB passband test of the 70 cm receiver for my presentation.

Here’s another look at a 500 kHz span at 0.5 dB/Div:

Here’s a look at the -60 dB passband with a 2 MHz span and 5 dB/div.  I increased the input

Level to get the skirts out of the noise.  It’s 1.248 MHz wide at -60 dBc.

Juan – WA6HTP

 





 
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