User manual | TPRD-4544 and 4744 Duplexers

400 - 512 MHz
TPRD-4544, 4744
PASS-REJECT DUPLEXER
ADVANTAGES
• Bandpass Characteristics
• 19” Panel Mount
• Adjustable Insertion Loss
• Adjustable TX to RX Protection
The TELEWAVE TPRD-4544/4744 Base Station Duplexers set
an all-time standard for the LMR industry. By using two TPRC4504 or 4704 Bandpass/Band-Reject cavities in each transmitter
and receiver path, these duplexers provide maximum TX to RX
protection in the most severe RF environments.
Heavy-duty materials are used in construction of this duplexer,
including silver-plated tuners and beryllium copper fingerstock
contactors, assuring high-Q performance with no problems due
to dissimilar metals. Tuning is simple and remains stable from
-30C to +70C, thanks to the threaded Invar rod.
The unique design of the Bandpass/Band-Reject duplexer provides a bandpass characteristic with minimum insertion loss,
while also providing maximum TX to RX protection.
With specified frequencies, all duplexers are pre-tuned and
tested prior to shipping from the factory. No further adjustments
should be required. The positive locking mechanism allows for
easy field tuning if frequency changes are implemented.
Other advantages include:
• Adjustable coupling to match the required attenuation for
ideal RX performance.
• All cavity inputs are electrically shorted to ground for maximum static and noise protection.
• RG-214 Mil-Spec cable is used for all interconnections to
ensure long life, and lowest insertion loss with maximum
power handling capability.
The TPRD-4544/4744 duplexers mount on a 19” standard
rack, with panel height of 5.25”. Power handling is 250 watts.
Receiver desense protection is at least 90 dB, and TX sideband
suppression is at least 75dB, making these duplexers ideal for
all base stations.
With TX to RX spacing of 3 MHz or more, this duplexer can
combine two transmitters into one antenna, or feed two receivers. For spacing less then 3 MHz, please contact Telewave for
additional information.
TELEWAVE, INC. 660 Giguere Court San Jose, CA 95133
Toll Free: 1-800-331-3396 Direct: 408-929-4400 Fax: 408-929-4080
http://www.telewave.com
All specifications subject to change without notice
Email: [email protected]
TWDS-6014
Rev. 10/04
TPRD-4544, 4744
MODEL
Frequency Range
Frequency Separation (min)
TPRD-4544
400-470 MHz
5 MHz or more
TPRD-4744
470-512 MHz
3 MHz or more
COMMON SPECIFICATIONS
ELECTRICAL
Maximum Power Input (Continuous)
250 Watts
Insertion Loss (TX & RX to Antenna)
1.0 dB
TX noise suppression at RX freq.
90 dB
RX attenuation at TX freq.
90 dB
Isolation (Minimum) TX to RX
5 MHz Separation
75 dB
3 MHz Separation
60 dB
Maximum VSWR
1.2 to 1
Temperature Range
-30 C to +70 C
MECHANICAL
Number of cavities
Cavity diameter in.
Dimensions in (cm) (HWD)
Mounting
Connector Termination
Finish
Net Weight lb (kg)
Shipping Weight lb (kg)
4
4
5.25 x 19 x 10.5 (13.3 x 48 x 26.7)
9” panel
Type N Female
Acrylic Enamel
21 (9.5)
26 (11.8)
ORDERING INFORMATION:
Exact transmitter and receiver frequencies must be specified.
TELEWAVE, INC. 660 Giguere Court San Jose, CA 95133
Toll Free: 1-800-331-3396 Direct: 408-929-4400 Fax: 408-929-4080
http://www.telewave.com
All specifications subject to change without notice
Email: [email protected]
TWDS-6014
Rev. 10/04

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