Bird Technologies 28-69-04A - Manual (Page 15)

TX RX Systems Inc. Manual 7-9177-1 09/19/97 Page 11
500
400
300
250
200
150
125
100
75
50
50 75 100 125 150 200 250 300 400 500
IN
PUT PO
W
E
R (
W
ATTS)
OUTPUT POWER (WATTS)
FOR LOWER POWER LEVELS, DIVIDE
BOTH SCALES BY 10 (5 TO 50 WATTS)
7.
0
6.
5
6.
0
5.
5
5.
0
4.
5
4.
0
3.
5
3.
0
2.
5
2.
0
1.
5
1.
0
.5
0
.2
5
INSERTION LOSS (dB)
POWER IN/OUT
VS.
INSERTION LOSS
The graph below offers a convenient means of determining the insertion loss of filters, duplexers,
multicouplers and related products. The graph on the back page will allow you to quickly determine VSWR. It
should be remembered that the field accuracy of wattmeter readings is subject to considerable variance due
to RF connector VSWR and basic wattmeter accuracy, particularly at low end scale readings. However,
allowing for these variances, these graphs should prove to be a useful reference.