PRO-LNAHP-4-3-2
Low Noise Amplifier / Preamplifier for the 4 m, 3 m and 2 m bands 68 - 240 MHz
Description
- Miniature high-dynamic range low-noise preamplifier for the 4 m LMR band, the FM radio band, the VHF air band, the 2 m LMR band and the DAB radio band.
- Covers 68 – 240 MHz.
- For use where additional preamplification may be required:
- In receiver systems to ensure low system noise figure
- As buffer amplifier in RF signal distribution systems
- As buffer amplifier to compensate high cable loss
- As preamplifier for measuring instruments
- Adjustable gain.
- Very low noise figure ensures best possible S/N ratio of weak RF signals.
- Excellent large signal behaviour ensures handling of strong RF signals with very low level of IM and harmonic distortion.
- Low power consumption.
- Models for 12 VDC or 24 VDC supply voltage available (please see ordering designations).
- DC supply on solder terminal.
- RF connectors: N-female on input and output ports (other types on request).
- Low weight.
- Wide temperature range.
- Sturdy aluminium box.
- PRO-LNAHP-4-3-2 is coated with black vinyl to prevent corrosion.
Specification
| Electrical | |
| Model | PRO-LNAHP-4-3-2 |
|---|---|
| Frequency | 68 – 240 MHz |
| Amp. Gain | 18 dB (Gain adjustment 3 dB to 18 dB) |
| Max. Output Power @ 1 dB Compression (P1dB) | > +17 dBm @ max. gain |
| Noise Figure | Max. 1.5 dB, typ. < 1.2 dB |
| Output 3. Order Intercept point (OIP3) | > +31 dBm @ max. gain |
| Impedance | 50 Ω |
| Output 2. Order Intercept point (OIP2) | > +47 dBm @ max. gain |
| Max. Input Power (dBm) | 17 dBm |
| Ripple | ≤ ±2 dB |
| VSWR | < 3.5:1 (typ. < 2.0:1) |
| Input-Output Isolation | > 20 dB |
| DC Supply | 11 to 14 V DC / 60 mA |
| Environmental | |
| Operating temperature range | -30 °C to +60 °C |
|---|---|
| Mechanical | |
| Connection(s) | N(f) (standard), BNC, TNC or SMA on request |
|---|---|
| Historic Brand | Procom |
| Dimensions | 129 (incl. conn.) x 152 (incl. flanges) x 35 mm 5.08 x 5.98 x 1.38 in. |
| Weight | 0.35 kg / 0.77 lb. |
| Mounting | 4.3 mm dia. (4 holes) |
Ordering Codes
| Model | Product No. | Input Power |
|---|---|---|
|
PRO-LNAHP-4-3-2-12V-N |
210000175 | 12V |
|
PRO-LNAHP-4-3-2-24V-N |
210002296 | 24V |
Additional Information
Gain Adjustment
- The PRO-LNAHP is provided with gain adjustment option.
- Gain is adjusted by turning a gain adjustment screw located 10 mm below a 4.5 mm hole on the top of the PRO-LNAHP housing. See drawing below.
- Access to the adjustment screw hole is made by removing the black label on the top of the box.
- The adjustment screw is a slotted type, which can be adjusted by an ordinary 2.5 mm screwdriver.
Typical Gain and VSWR curve
Typical Noise Figure
Mounting Details
All dimensions are given in mm [in.]
EU and UK Declaration of Conformity
Hereby Amphenol Procom declare that the product type PRO-LNAHP-4-3-2 is in compliance with EU Directive 2014/53/EU and
the UK Radio Equipment Regulations 2017 (S.I. 2017 No. 1206).
The full text of the Declaration of Conformity is available at:
https://s3.us-west-2.amazonaws.com/catsy.1080/Declaration-of-Conformity-PRO-LNAHP.pdf
PROCOM A/S reserves the right to
amend specifications without prior notice
PROCOM A/S • Smedetoften 12
DK 3600 Frederikssund • Denmark
Generated : 2026-06-27
Version 1