nevermind... solved it 0.3dB insertion loss now...
mike
-----Original Message-----
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Mike Perryman
Sent: Tuesday, November 22, 2005 12:51 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] tuning a TFB6024A low-pass filter
A question for the Micor Guru's of the group...
I am in process of converting a low-band Micor to 6m and have a quick
question.. the only docs I have found for tuning the low-pass filter to 6m
meters is to tune for minimum insertion loss...
What constitutes an acceptable value for insertion loss?
I am not happy with the current -0.68dB to 0.7dB @ 51.9MHz figure I have
obtained. And if I scroll the marker over to around 28MHz, I see it drops
to around -0.4dB. Is it worth the trouble to optimize this filter? Or will
the exciter generally make enough signal that I shouldn't worry about it and
move on? It took a little twiddling to get it to this point.. but not
opposed to continuing for better numbers..
Any takers on this one?
Thanks,
mike
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