TOPTEK PA-180V VHF Power Amplifiers are very stable Solid State linear amplifiers designed for Amateur Radio 2 Meter FM, SSB and CW communications. Dual MOSFET push-pull PA's provide full RF output* of 180 watts with only 5 watts input, making this amplifier useful for both handheld and compatible mobile VHF transceivers.
Front panel push-buttons select Mode, RX preamp, SWR meter and Power Output Settings of 60, 100, 140, or 180 watts. The front panel multi-color 8 LED string serves to indicate output power settings, output power, SWR and Error.
A unique shroud enables the oversize fan to quietly cool this compact amplifier for safe, long-term operation at full power. Multiple protection circuits, a 21dB Receive Low Noise Amplifier (LNA), RF sense or PTT keying (required for SSB/CW) and a large, quiet thermostatically controlled fan are some of the great features of this Toptek VHF amplifier.
*Requires 13.8 VDC @ 30A max. (External power supply not included).
THIS UNIT WILL ONLY BE SOLD TO QUALIFIED AMATEUR RADIO OPERATORS AND MUST ONLY TRANSMIT ON AMATEUR FREQUENCIES. THE PURCHASER MUST PROVIDE PROOF OF THEIR AMATEUR RADIO QUALIFICATION. IF YOU DON'T HAVE AN AMATEUR RADIO (HAM) LICENCE PLEASE DON'T PURCHASE OTHERWISE WE WILL REFUND YOUR PURCHASE.
Features and Specifications:
- Frequency Range 138 - 174 MHz
- Output Power: 180 watts, typical @ 5 watts Input
- Input Power Range: 1 - 10 watts
- Input Power for Full Output: 5 watts (frequency dependent)
- RF Bypass Maximum: 50 watts
- Harmonic Suppression 60 dBc
- Modes: FM, SSB, CW
- Circuit Type: Two MOSFET, PUSH-PULL amplifiers combined
- Receiver Preamplifier Gain: Typ. 21dB
- Noise Figure: Typ. 2.4 dB
- Supply Voltage: 13.8 VDC***, Minimum: 10.5 VDC, Maximum: 14.8 VDC
- Supply Current at 180W Output: 27 A (30 A peak max., frequency dependent)
- Standby Current: 8 mA all functions OFF; 35 mA TX PA enabled; 80 mA RX LNA enabled; 88 mA TX PA and RX LNA enabled
- External PTT Keying Connector: 3.5mm female stereo (1/8 in. TRS jack: ground Tip for PTT)
- RF Connectors: Type N female (50 ohm, low loss)
- Dimensions, w/o connectors: W-124 x H-86 x D-197 mm
- Weight: 1.15 kg
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WARNING: The transistors in the RF finals are expressly not covered by the manufacturers warranty. We do not accept 'change of mind', 'upgrade', 'not quite what I wanted' or 'swap' returns so be careful this is the model you want before purchasing.
Please Read Before Using:
- Do not use outside of the specified frequency ranges as damage may occur.
- Care needs to be taken that the antenna you are connecting to is in good condition and the VSWR is less than 1.5:1 on the frequency you are transmitting on.
- For higher power amplifiers (100+ watts) we recommend a single band antenna tuned to the frequency you are transmitting on.
- Never use an amplifier to attempt to compensate for a poorly tuned, high SWR antenna, for poor quality coaxial cable or connectors.
- We strongly recommend not using a power amplifiers with an indoor or loft antenna.
- Check the transmit power immunity of your vehicle if vehicle mounting as this may damage the electronics and/or disable your vehicle or functions of your vehicle.
- Be certain that the supply current from your power supply is ample for the peak current draw of the amplifier otherwise damage to the amplifier may occur.
- Be very careful when operating at high power and keep well clear of the transmitting antenna.
- Always check your antenna and feedline performance with an SWR meter on low power before increasing power to maximum.
- Do not overdrive the RF input of the amplifier.
- Do not operate the amplifier without a 50 ohm antenna or overrated dummy load connected to the antenna output.
- Do not operate your amplifier in hazardous environments - ie service stations, mines, etc
- Regularly or continuously test your antenna and feed line SWR for unexpected performance issues.
- Disconnect the antenna if lightning or storm activity is occurring nearby.
- Do not touch the antenna or exposed antenna connections when transmitting.
- Stop transmitting immediately if a fault appears.