Commtel COM102 - Locking the Keypad; Frequency Coverage

When scanning the scanner will now skip the locked-out
channel. The locked-out channel can still be selected
manually . (see "Manual Select i on ")
Unlocking a channel is done by press ing UOUT so that "L"
di sappears from th·e display .
LOCKING THE KEYPAD
Having programmed your scanner, you can protect it from
accidental programme changes by pressing KEY LOCK
button . A dash (-) appears on the display panel. VOLUME,
LIGHT, SQUELCH, MANUAL and SCAN are the only
functions that will operate when in this mode.
FREQUENCY COVERAGE
VHF Low . .. .. .. ... .. ... . .. . .. ............................. 68-88MHz (in 5kHz steps)
Government ............ ... .. . .. .. .. .. .... ... ........ 138-144MHz (in 5kHz steps)
Ham Radio 2m .... .................... .... . ... .. . .. 144-148MHz ( in 5KHz steps)
VHF - Hi . ... .. ...................... ... ... .. ...... ...... .. 148 -174MHz (in 5kHz steps)
Ham/Government ... .. ......... .... . ... . ... .. 380-450MHz (in 12 .5kHz steps)
UHF - Lo ................. ... ... ........... .. ........ 450-470MHz (in 12 .5kHz steps)
UHF- Hi ......... ... ..... ... .... .. .... .... .. . .... .. .. 470-512MHz (in 12 .5kHz steps)
Sensitivity (20d8 SIN at 3kHz Deviation:
68 -88MHz ............. .. . .... . ... ... ..... .. ... .. ... ... ... ..... .. . .. ... .. .. . ... . .. ..... 1.0µV
138 -174MHz .. . .. .... .. . .. . .. .. .. . ... .. . .. .... .... ...... .. ..... . ... ....... .. .. ... .. .. 1.0µV
380-512MHz .. .. ... ... .. .. .. .... . .. . .. . .. . ... ...... .. ............... ... . ... .. . .. ..... 1.0µ V
Spurious rejection:
68-88MHz .............. .. ........... .. .. .... ... .. .. .. ... .... ........ .. . 50d8 at 78MHz
1 38 -174MHz ................... ................ .. .. .. . .. . .. .... . .. .. 50d8 at 154MHz
380-512M Hz ........ .. . .. .. ..... .. . .. ............. .. . .. . .. ...... .. .. .. ... Not specified
Selectivity ............. .... ............................... .. .. ... . ... ........ -6d8, +/-10kHz
................ .... ... .. ... ... ... .. .. .. . .. . .. .............. .. .... . ... .. ..... . .. -50dB, +/-20MHz
I. F. R ej ection ........ .. .. ......... .. . .. ...... .... ....... 10 . 7 MHz -50dB at 154MHz
Scanning rate . .. .. ...... ... .. ... . ... ......... .. ..... .. ............ .. ..... 8 channels/sec.
Delay time ... ... .. ................................ .. ... . .... .. ... ... .. .. ... . .. ... ... 2 seconds
Modulation acceptance .... . .. ... ........ .. ............................... .. .. .. . +/-8kHz
I. F. fr equencies ................................................ 10 .?MHz and 455kHz
Filters .... .. ... . ... .. .. .. .. ............ ... .... ... .... ........... One crystal, one ceramic
Squelch sensitivity:
Threshold . ... . ... ... .. ..... .. .............. ... ........................ Less than 1.0µV
Tight ....... ....................... .. ...... .... .............. ...... ........... (S+N)/N 25d8
Antenna impedance .... . .. .............................................................. 50n
Audio power .............. .. ......................... .. .......... ... .. 250mW maxi mum
Pow er requirements +9Vdc, 6AA batteries, or su itable adapter (neg .
ground on l y)
Light .. ...... ........ .. ............................ Pr e ss LIGHT to illuminate display
Dims ... .. ....................................................... 160 x 70 x 40mm (HWD)
Weight .... .. . ... ... .. ....... .. . ... .............................................. 1 0.Soz (300g)
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