20 Watt Multi-band Power Amplifier (MPA)

© Brooke Clarke 2017
20 Watt Multi-band Power
          Amplifier (MPA)

Background
Description
    Amplifier
    Battery
    30 - 90 MHz Ant
    Helmet Mount
    Carrying Case
Related
References
Links

Background 

These parts all came in a single eBay lot with the title: "Military AN/PRC-148 Carrying Case,Thales 20 Watt MPA Amplifier, Antenna, Battery".
All the parts in the kit, were made by Thales.  The amplifier does fit into the bag.  All these items were part of a kit for the PRC-148 MBITR tatical radio (Wiki).
Since the MB in MBITR stands for Multi Band, I'm guessing the M in MPA stands for Multiband.

Description

Amplifier

Thales p/n: 1600610-1
24 V, 5.25 A Max
Size: 3.3" x 2.5" x 8"
weight: 3 pounds. 
Radio Connector: TNC Jack (See Fig 1)
Antenna Connector: SINCGARS (See Fig 1)
Chassis Power Connector: PT07A-12-10P (See Fig 8 below)
Cable Connector:  ______ TBD______

Pin
Function
Notes
A, G, K
Ground
B
unknown to PLD (logic level)
C, J
+24 in
D
RS232 from amp
E
PSEN/ (for updating firmware)
F
RS232 to amp
H
unknown to PLD (logic level)


Internally - power supply:
Black (thick)     Ground
Red (thick)     +24 in
Green     to PA, T/R relay circuit
Brown     +5 out to PA board
Orange (thick)     +25.5 to PA board (regulated)
White     +100 to filter board

Fig 1
20 Watt
                      Multi-band Power Amplifier (MPA)
Fig 2 Mfg label partailly removed
20 Watt
                      Multi-band Power Amplifier (MPA)
Fig 8 chassis: PT07A-12-10P

20 Watt
                      Multi-band Power Amplifier (MPA)


Battery

Thales
p/n: 1600515-7
Li-Ion
12.6 V, 4.4 AH

Fig 3
20 Watt
                      Multi-band Power Amplifier (MPA)
Fig 4
20 Watt
                      Multi-band Power Amplifier (MPA)

30 - 90 MHz Antenna

49" long
Thales Antenna, Blade
CAGE: 23386
p/n: 1600629-1
NSN: 5985-01-487-1135
Freq: 30 - 90 MHz (some eBay selleres show the wrong frequency range of 30 - 512.  It takes two different antennas to cover the full PRC-148 frequency range.

Note folded 4 times to fit into carry case.
Fig 5
20 Watt
                      Multi-band Power Amplifier (MPA)


30 - 512 Mhz Antenna (not included)

TNC plug at base.  Will not fit pictured amplifier since it has SINCGARS antenna connector.

Mfg: Thales
Harris
Thales
Name:
Antenna, Blade
30 MHz -  512 MHz, 8W
13"
p/n: 1600495-1 12011-2710-01
1600500- (1 or 2)
NSN:
5985-01-584-7883 5985-01-559-4696 5895-01-487-1134

Helmet Mount

Not sure if this is for a Night Vision Device or antenna.  Let me know.

Fig 6
20 Watt
                      Multi-band Power Amplifier (MPA)

Carryying Case, AN/PRC-148(V)(C)

Thales
p/n: 1600495-1
Made inUSA

Fig 7
20 Watt
                      Multi-band Power Amplifier (MPA)

Related

 

References

There are a number of military surplus "brick" multi-band (VHF/UHF) power amplifiers aka Tactical Booster Amplifiers on the market that maybe can be used in the ham bands.  They are commonly about 3.3" x 2.5" x 8" in size and weigh about 3 pounds.

One is the KMW1031 rated at 20 Watts CW or PEP, 30 to 512 MHz, NSN: 5996015813519. While it's not the amplifier pictured on this web page it bears a strong similarity. 

The Kalmus KMW1030 family is very similar.  The ABP version is the ABP-10PA31.


Links

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Page Created 31 March 2017