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Date Posted by Category User IP

2017-05-13 (UTC)

WB0QMZ

Repeaters

user-0c6tmkn.cable.mindspring.com

Telewave TPRD-4546 UHF Duplexer 400-512MHz LikeNew

PRICE REDUCED!

Telewave TPRD-4546 UHF Duplexer 400-512 MHz Bandpass - Mint Condition (Like New)

Purchased this duplexer from 1st owner (never used). As it turns out, was not required for
our intended use either for a club repeater (a 4-cell duplexer met our isolation
needs). The duplexer has been bench test to confirm specs. Currently set for 458.400 MHz
Receiver & 453.400 Transmitter; but of course can be set for any repeater pair
within the stated UHF range.

Cost $1,695 with free shipping (CONUS only); Retail $2,659

Payment via PayPal only

Please contact me for any questions.

Thank you.

---

The Telewave TPRD-4546 UHF Duplexer allows simultaneous operation of a transmitter or
combiner and receiver into a common antenna. This bandpass/band reject duplexer
provides maximum TX-to-RX isolation with minimum insertion loss. Six 4-inch high-Q cavities
in a pass/reject configuration provides better isolation with lower loss than an
equivalent bandpass-only duplexer.
The superior construction of Telewave duplexers allows the highest possible rejection of
transmitter spurious radiation and noise, providing maximum protection for the receiver
system. Heavy-duty materials are used throughout to insure top performance and long
service. Each cavity is constructed with a 1/4" aluminum top plate which is fully welded
to the cavity body. RG-214 Mil-Spec cable is used for the interconnect, and temperature
stability is maintained by the use of a threaded Invar tuning rod. Tuners are all silver-
plated, and sliding contacts are manufactured from berylium copper fingerstock.

This unit is 19" rack mounted, and comes with N-F connectors standard. Selectivity and insertion loss are adjustable as required.


SPECIFICATIONS

ELECTRICAL
Model TPRD-4546
Frequency Range 400-512 MHz
Frequency Separation (min) 3MHz
Max Input Power 250 Watts
Insertion Loss At Pass Bandwidth
(TX and RX) 1.75 dB typ. / 2.0 dB max
TX Attenuation at RX Band (typ) 95 dB
RX Attenuation at TX Band (typ) 95 dB
TX to RX Attenuation at 3 MHz (min) 85 dB
TX to RX Attenuation at 5 MHz (min) 85 dB
VSWR ref. to 50 Ω (max) 1.25:1
Temperature Range -30�C to +70�C
MECHANICAL
Dimensions (HxWxD) 10.5 x 19 x 10.5 (in.)
27 x 48 x 27 (cm.)
Mounting 19� Panel
Connectors
Antenna
TX Input
RX Output
N-Female
N-Female
N-Female
Panel Finish Clear Alodine
Cavity Finish Gray Enamel
Net Weight lbs (kg) 16 (7.3)
Shipping Weight lbs (kg) 19.5 (8.9)

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