TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TDFM-7300-2 Installation & Operating Instructions
TiL 10RE430A
3-11
B.
Determine if the image frequency for the VHF Comm falls within the range of the TDFM-7300-2. If
so, select a set of frequencies that will cause the TDFM-7300-2 to be set as close as possible to
the image frequency. Any one of the many possible sets will suffice. Record those values in the
spaces provided in the following chart. Modulate the TDFM-7300-2 transmitter on the following
frequencies for at least 20 seconds. Listen for any noise or detected audio signals on the VHF
comm.
Example - Bendix /King KY 196A:
The first IF frequency is 11.4 MHz. The L.O. is above the received frequency (high side injection),
therefore the image frequency is 22.8 MHz above the selected frequency. Set the KY 196A to
120.000 MHz and the TDFM-7300-2 to 142.8000 MHz.
FREQUENCIES RESULTS
VHF #1
TDFM-7300-2
PASS
FAIL
135.975 136.0000
121.150 157.5000
131.250 157.5000
Image:
FREQUENCIES RESULTS
VHF #1
TDFM-7300-2
PASS
FAIL
135.975 136.0000
121.150 157.5000
131.250 157.5000
Image:
NOTES:
