We found the problem, a bad connection in the pre-manufactured and pre-assembled antenna harness included with the antenna. Forward power 1100 watts, reflected only 2 watts, hope we are good to go.
The crew did sweep the antenna.
The GatesAir FAX fans sound metallic, dry, hope that is normal.
From: Ron Huckeby [mailto:firstname.lastname@example.org]
Sent: Thursday, September 07, 2017 10:52 AM
Subject: RE: [CRTech] Combiner-Isolator?
You could call Dick Jones in Billings (406)855-3131 and have him sweep the antenna. That would tell you where the problem is at. Or hook the BE up to the new antenna.
Hope you have good success,
Ron Huckeby, CBRE
I’m asking this question below because we replaced the BE FM 1C1 transmitter with a GatesAir FAX unit, and now having high SWR issues. Maybe the SWR is caused by lack of output bandpass filter in the crowded location? Maybe adding an output filter would help?
But this is complicated by the fact we also replaced the 3-bay antenna so we’re troubleshooting.
In a BE FM 1C1 1 KW transmitter, would the RF output combiner also act as an isolator to help reduce IMD in a crowded location? This transmitter has two RF output modules with an RF combiner with a reject load resistor on one port.