146.91 Status details

updated: 7/18/09 tpe

Control receiver operational!

Duplexers were finally repaired one TX cavity has been busted since 4/19/06 and a Temp cavity was in place. The new cavity was has 20db more rejection on 146.31 and less insertion loss on 146.91 resulting in 6 more watts out!

Wish List:

Put up a perminent fan switch (I have a microwave control board in place now). Also want some noise filtering to reduce the hum on the output.
Split the Lodge and Bunker alarm feeds (If we want to). Right now they are together as one line.
AC Power failure message and courtsey tone change needed.
Remote controlled antenna relay to switch to indoor antenna without climbing the hill.
High temp warning
High SWR warning

A new antenna was installed 7/15/07 by Frank KA2QYE! This new antenna is special. Our previous antennas were commercial modified for ham use. This antenna was origionally cut for 146.715 purchased for 147.03. This antenna was MADE for the HAM bands. It still has manufactures silver solder in prime condition! This should work better than most antennas we have tried and should last for quite some time if the weather does not rip it from the tower!

Battery status:
07/18/09 ran on battery for 1 minute on full load and voltage dropped to 12.46volts. This is a reference to determine when we need new batteries.

07/18/09 cavity tuning results:

Front TX cavities 
left cavity (newly repaired)
91 insertion loss -0.8db  << Not sure why so high.
31 rejection of -34db

center cavity 
91 Insertion Loss -0.5db
31 rejection of -38db

right cavity
91 insertion loss -0.5db
31 rejection of -41db

Total TX pass 91 Insertion loss -1.6db measured with cables.
Total rejection of 31 Greater than -90db (my equipment limit is -90)

Forward power is now 55watts, reverse 0watts
DC power on TX 20amp @ 13.8v

Rear or rack cavities (RX):
left (close to ant) 
31 Insertion loss -0.6db 
91 Rejection -34db

center cavity
31 insertion loss -0.4db 
91 rejection -33db

right cavity
31 Insertion loss -0.4db 
91 rejection -33db

Total insertion loss 1.3db! measured with matching cables.
Total rejection of 91 is Greater than I can measure limit of -90db.