Bad cal data on the network analyzer... and the Tunwall leads are poor test leads. Good for AM ATU's and not much more. Used good cables, and did a thru-transmission test... I had to cut the inductors ever so slightly.. but things started looking more like I had expected in the first place. I also found 3 cold solder joints from Moto inside the assembly..
mike -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of Bob M. Sent: Tuesday, November 22, 2005 4:07 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] tuning a TFB6024A low-pass filter Well, tell us how. Or was it operator error? Bob M. ====== --- Mike Perryman <[EMAIL PROTECTED]> wrote: > 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 __________________________________ Yahoo! FareChase: Search multiple travel sites in one click. http://farechase.yahoo.com Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
