User's Manual

Compact Portable Receiver
Rio Rancho, NM
9
Navigating the Menus
Menu setup items are arranged in a vertical list on
the LCD. Press MENU/SEL to enter the menu, then
navigate with the UP and DOWN arrows to highlight
the desired setup item. Press MENU/SEL to enter the
setup screen for that item. Refer to the menu map on
the following page.
Press MENU/
SEL to enter
the menu
Press the UP and DOWN arrows
to navigate and highlight the
desired menu item
Press MENU/
SEL to
enter the
setup of the
highlighted
item
Press BACK
to return to
the previous
screen
About Frequency Blocks
A 25.6 MHz block of frequencies, referred to as a
Block, came about with the design of the first fre-
quency tunable Lectrosonics wireless products. These
products provided two 16-position rotary switches to
select frequencies as shown in the illustration below. A
logical method of identifying the switch positions was
using 16 character hexadecimal numbering. This nam-
ing and numbering convention is still used today.
The 16 switch positions are numbered 0 (zero) through
F, presented in a two-character designation such as
B8, 5C, AD, 74, etc. The first character indicates the
position of the left hand switch and the second charac-
ter indicates the position of the right hand switch. This
designator is commonly called a “hex code.”
FREQUENCY
1.6MHz
100kHz
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
On older transmitter models, the left hand
switch makes steps in 1.6 MHz increments,
the right hand switch in 100 kHz increments.
Each block spans 25.6 MHz. A simple formula is used
to name the blockss according to the lowest frequency
in each one. For example, the block starting at 512
MHz is named Block 20, since 25.6 times 20 equals
512.
As the available RF spectrum has changed, special
blockss have been created to cover different blocks
than the simple formula described above. Block 470,
for example, is named according to the lower end of
the frequency range, expressed in MHz, rather than
the formula described above.
The L-Series wireless products tune across 3 blocks
(except 606), and can tune in either 100 kHz or 25 kHz
steps, as shown in the table below. Letter prefixes and
a numeral designate the tuning range of a transmitter
and receiver. Special subsets of each tuning range
may become necessary, and if so, will have names
such as A2, A3, etc.
Band Blocks covered Freq. (MHz)
A1 470 thru 20 470.1 - 537.5
B1 21 thru 23 537.6 - 614.3
C1 24 thru 26 614.4 - 691.1
The hex code is repeated in each 25.6 MHz block, so
it will appear up to 3 times across one tuning range.
For this reason, the block that a selected frequency
falls within is in the upper right corner of the LCD, just
above the hex code.
Band number
Hex code