Lectrosonics DSR4 - Antenna;Block Reference Table

Four Channel Digital Receiver
Rio Rancho, NM
17
Antenna/Block Reference Table
The two AMJ whip antennas supplied with the receiver are factory cut to specic frequency blocks as shown in the
table below. A colored cap and label are used on blocks 20 through 26, and a black cap and label are used on the
other blocks to denote the frequency range of each model.
The chart is useful for fabricating an antenna from coaxial cable or other materials, or for identifying the frequency of
an antenna that is not marked. The lengths shown are specically for the AMJ whip antenna with a SMA connector, as
determined by measurements with a network analyzer. The optimal length of the element in other designs will likely be
dierent than those shown in this table, but since the bandwidth is typically wider than the specied block, the exact
length is not critical for useful performance in whip, dipole and coaxial designs.
32
470
944
33
31
21
22
23 24
25 26 27
28 29
30
20
19
915
779
CUTTING TEMPLATE
Lay uncut antenna on this template and cut to length for the desired frequency block
Note: Check the scale of your printout. This line should be 6.00 inches long (152.4 mm).
Whip Length
Tr im the end of the color cap and slide the remaining sleeve over the whip - OR - Glue color cap onto the end
*Cut end of cap off
and slide over whip
Frequency Blocks
*Color cap
Note: Not all Lectrosonics products are built on all of the blocks covered in this chart.
A1
470 470.100 - 495.600 Black w/ Label 5.47” 141.2 mm
19 486.400 - 511.900 Black w/ Label 5.19” 133.9 mm
20 512.000 - 537.500 Black w/ Label 4.95” 126.2 mm
B1
21 537.600 - 563.100 Brown 4.73” 119.6 mm
22 563.200 - 588.700 Red 4.47” 113.8 mm
23 588.800 - 614.300 Orange 4.23” 108.5 mm
C1
24 614.400 - 639.900 Yellow w/Label 4.07” 103.4 mm
25 640.000 - 665.500 Green w/Label 3.87” 98.3 mm
26 665.600 - 691.100 Blue w/Label 3.68” 93.5 mm
941/961
941 941.525 - 959.825 Black w/Label 2.53” 64.3 mm
961 961.100 - 1014.900 Black w/Label 2.53” 64.3 mm
FREQUENCY
BLOCK RANGE CAP COLOR ANTENNA WHIP LENGTH