MODEL 38 Max Repeater Panel
The Zetron Model 38-MAX is a high capacity, remotely programmable, community repeater controller. It provides individualized repeater service for up to 160 different customer groups using 50 CTCSS tones and 110 DCS codes. This makes it the ideal panel for scan-based trunking applications.
In addition to a large user-group capacity, the 38-MAX offers other unique features to enhance repeater performance. An �airtime usage summary� provides a convenient method of determining the loading across every tone/code. A �dynamic conversation timer� automatically lengthens and shortens the maximum conversation limit in accordance with the rise and fall of traffic patterns.
A �dual time constant squelch� compensates for the difference in transmission strengths between nearby radios and distant or obstructed radios.
The Model 38-MAX is equipped with all
of the performance features serious community repeater operators
have come to demand. ToneLock 3dB SINAD decoding, a Zetron
exclusive, eliminates dropouts resulting from weak,
Individual station IDs may be programmed for each user, and a single system ID may be programmed for private carrier or cooperative applications. Automatic station ID means that users are no longer required to use valuable air time speaking their call sign. The Morse code ID feature automatically transmits a user�s call sign at the beginning of a transmission and at programmed intervals.
Courtesy beeps may be used to
encourage unfamiliar radio users when to begin speaking, or tailbips
(one beep per second) can occur during the repeater hold time.
The auxiliary relay provides a
contact closure that can be programmed to close whenever a specific
CTCSS tone or DCS code is received. Any individual tone or code, or
group of tones or codes may be programmed to activate the relay.
INSTALLATION AND SETUP
Easy installation and setup ensures that a technician can install a Model 38-MAX in nearly any repeater or duplex station. Installers will appreciate the detachable screw terminal connector that makes the installation a snap. Factory wired cables and field proven application notes take the guesswork out of the installation procedure. Installation application notes are included in the instruction manual for the most popular repeaters from companies such as Ericsson/G.E., E.F. Johnson, Icom, Midland, Motorola, Regency, Repco, Standard, Tait, Uniden, and others. Only six connections are required in typical installations, and expert interface assistance is available from Zetron.
|CTCSS tones||50 standard tones between 67 and 254 Hz|
|DCS codes||110, programmable as any octal code 000-777. Default settings for 104 standard DCS codes|
|DCS noise immunity||Up to four bit errors in any position|
|Sensitivity||ToneLock 3dB SINAD CTCSS, 5dB SINAD DCS|
|Squelch tail elimination||Detects CTCSS reverse burst and DCS turnoff code|
|Input impedance||50K-ohm AC coupled. For connection to unsquelched discriminator audio|
|Frequency accuracy||0.05 Hz|
|Frequency stability||Crystal controlled|
|Output amplitude||0.0 to 3.0 V p-p|
|Output slope||Flat or de-emphasized|
|Output distortion||Less than 2%|
|Impedance||Less than 1K-ohm AC coupled|
|Squelch tail elimination||DCS turnoff code sent, CTCSS encode drops minimum of 150mS before PTT, muting listening receivers|
|Morse ID frequency||1200Hz; adjustable �800 Hz|
|Beep frequency||1000 Hz; adjustable 400 to 4000 Hz|
|DTMF encoder||Standard DTMF tones|
|Connections||Discriminator audio, Receive carrier detect, Transmit audio, CTCSS/DCS encode, PTT, Power, Ground, Auxiliary relay output, Site alarm input|
|Connector type||Detachable screw terminal|
|Adjustments||Rear panel accessible;
Rx input level,
Tx output level, CTCSS/DCS encode level, Carrier detect threshold
|Indicators||Power, Rx carrier, Transmit, CTCSS DCS Decode, DTMF, Aux relay|
|Serial data port||RS-232 compatible levels|
|Interface||Tx data, Rx data, ground|
|Baud rate||Selectable: 150, 300,
600, 1200, 2400, 4800, 9600
RS-232 port fully operational while unit is active on the channel
|Rear switches||Audio input level high/low, audio input flat/de-emphasis, CTCSS/DCS encode level high/low, CTCSS/DCS encode flat/de-emphasis, audio output level high/low, COR internal/external, COR polarity normal/invert, COR pull-up on off|
|COR input range||Adjustable threshold of
0 to 7 VDC.
Detection requires a 1 volt change between carrier and no carrier conditions
|Current consumption||70 mA at 13.8 VDC (LEDs disabled), 100 mA typical|
|Operating voltage||11.0 VDC to 15.0 VDC|
|Rackmount size||1.7" x 19" x 4.8"|
|0 to 65� C.|
WISCO International, Inc. -
MIAMI, FL U.S.A.
Fax: E-mail: email@example.com