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TN110 Channel and Frequency Selection

MT-4E Channel and Bank Selection

MT-4E radio modules are capable of 16 channel operation in 2 banks (32 channels total).
The 16 channels are controlled via four CSEL signal lines connected to each receiver and transmitter module. The
CSEL signal lines are set as either a 0 (0 Vdc) or a 1 (+9.5 Vdc). Table 1 shows the channel selected for the CSEL
input settings.
Table 1: Channel Selection Settings
Channel
Decimal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
The Receiver and Transmitter Bank A/B select lines are set as either a B (0 Vdc) or an A (+9.5 Vdc). The logic for
the Bank A/B select lines is diff erent from the CSEL signal lines. If the Bank A/B select line is pulled high (+9.5 Vdc),
or left fl oating, Bank A is selected. If the Bank A/B select line is pulled low (0 Vdc), Bank B is selected.
On older motherboards (Serial # 123125 and earlier), the Receiver Bank A/B select line uses the same line as the
MT-3 Receiver ISO COR K and the Transmitter Bank A/B select line uses the same line as the MT-3 Transmitter
Standby. No jumpers are available for the Bank select.
TECHNICAL NOTE:
TN110, REV 4-0-0, © Aug 2016
CANADA/US
+1 250 382 8268
CSEL3
0
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
1
9
1
10
1
11
1
12
1
13
1
14
1
15
1
| TOLL FREE
+1 800 664 4066
TECHNICAL NOTES
MT-3/4 Radio Systems
CSEL2
CSEL1
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
CSEL0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CODANCOMMS.COM
LMRSALES@CODANCOMMS.COM
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Summary of Contents for Codan MT-3

  • Page 1 On older motherboards (Serial # 123125 and earlier), the Receiver Bank A/B select line uses the same line as the MT-3 Receiver ISO COR K and the Transmitter Bank A/B select line uses the same line as the MT-3 Transmitter Standby.
  • Page 2 TECHNICAL NOTES MT-3/4 Radio Systems TN110 Channel and Frequency Selection There are 3 diff erent ways to change the channel and bank of a transmitter / receiver module: The user can set jumpers mounted on the motherboard for each Channel Select signal line (set of four for each Tx / Rx module) and Bank A/B select line.
  • Page 3 TECHNICAL NOTES MT-3/4 Radio Systems TN110 Channel and Frequency Selection Transmitter A Channel Select Switching Control Option Diagram TECHNICAL NOTE: CODANCOMMS.COM TN110, REV 4-0-0, © Aug 2016 LMRSALES@CODANCOMMS.COM CANADA/US | TOLL FREE +1 250 382 8268 +1 800 664 4066...
  • Page 4 TECHNICAL NOTES MT-3/4 Radio Systems TN110 Channel and Frequency Selection This Page Intentionally Left Blank TECHNICAL NOTE: CODANCOMMS.COM TN110, REV 4-0-0, © Aug 2016 LMRSALES@CODANCOMMS.COM CANADA/US | TOLL FREE +1 250 382 8268 +1 800 664 4066 Page 4 of 4...

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