Going the extra mile

SP23 23cm Masthead Preamplifier

 

  • 1.5dB Noise figure
  • 1250-1300Mhz Frequency Range
  • 100W SSB power handling
  • RF sensed changeover or sequential
  • Powered from DC voltage on Coaxial cable
 

Availability: In stock

Price excl VAT: £226.83 Incl VAT: £272.20
 
OR

SP23 23cm Masthead Preamplifier

 

The low-noise preamplifiers of the SB Super-Amp series are available for the amateur radio bands 6 m, 2 m, 70 cm, 23 cm and 13 cm.

All models are equipped with low-noise GaAs-FET devices which are safeguarded against HF by a an effective 
protective circuit.
 
To suppress unwanted signals two filters are used in the SB range by etched Microstrip-Filters on the ceramic board and high-value Helix filters. 

The SB Super-Amp amplifiers can be operated alternatively with a remote or direct feed. The relay circuit is RF sensing so can be simply installed with automatic changeover to TX if required. However, when a power amplifier is used, we recommend our Sequence Controller DCW 2004 B-SHF to ensure  the correct sequential receive/transmit switchover, controlling the relays with-out the risk of arcing.

Power to the units is supplied by the coaxial cable (remote power supply). 

TYPICAL GAIN AND NOISE PLOT HERE

All SB Super-Amp amplifiers are manufactured in a UV-resistant, weatherproof housing using N-Type sockets. Hot-dip galvanized clamps and installation material are supplied.

 
Technical Data
SP-600
SP-200
SP-700
SP-23
SP-138
Frequency range/MHz
50-52
144-146
430-440
1250-1300
2300-2400
Noise figure
0,9 dB
0,9 dB
0,9 dB
1.5 dB
1.5 dB
Amplification
10-20 dB*
10-20 dB*
10-20 dB*
20 dB
20 dN
Switching power w. HF-Vox
100 W
100 W
100 W
10 W
10 W
Permissable power 
w. DCW-2004 (SSB)
500
750
500
100
50
Permissable power 
w. DCW-2004 (FM)
100
500
300
100
25
Insertion loss
0,2 dB
0,1 dB
0,3 dB
0,4 dB
0,7 dB
Operating voltage
13,8 V
13,8 V
13,8 V
13,8 V
13,8 V
Current consumption
300 mA
250 mA
250 mA
400 mA
max. Mast diameter
58 mm
58 mm
58 mm
58 mm
58 mm
Recommended remote powering coupler
DCW 2004 B
DCW 2004 B SHF
*Amplification is adjustable internally or by a variable attenuator between 10-20 dB.