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Universal 75W pallet amplifier

 2,99 99,99

In stock
 29,99

In stock

 55,99

In stock

 99,99

In stock

 99,99

In stock

 19,99

In stock

 2,99

In stock

 7,49

In stock

Prices shown are without VAT (paid only in EU)

Description

This amplifier uses the new inexpensive plastic easy to replace NXP LDMOS to produce a maximum of 100W! In a design where easy serviceability was top priority the cost of this product remains very reasonable. Finals are very easy to replace. Please keep in mind that more expensive ceramic devices are still more efficient and more robust than low cost plastic. Taking into account filter losses we recommend this pallet for 50W-75W transmitters, not more. We can modify the pallet for frequencies 20MHz to 250MHz on request.. It is very easy to replace the output transistor in this amplifier.

Technical specifications:
– Frequency band: 55-88MHz, FM band 87.5MHz to 108MHz, 140-150, 175-225MHz or others on request
– Pout: 110-115W max (narrowband operation)
– Pout FM band: 70-100W. We recommend 2-3dB attenuator at the input as otherwise oscillations are possible.
– Drive power required: 500mW-1500mW, varies somewhat with frequency
– Requires 28-50Vdc (requires 48V for full power)
– No bias adjustments or RF circuit tuning is required.
– Size: 40x48mm, 13mm high

You can find suitable filters here.
Suitable mains power supply are here.
heatsink used for this pallet can be used as well, scroll to the bottom.

Warning: Do not exceed maximum supply voltage of 50V or damage will occur.

Note 1: Please use teflon coaxial cable for RF input (RG178 is perfect) and output (RG178 or RG142 are perfect) connections, this makes it possible to have very short leads without burning the coax. Keep the coax leads as short as possible (few mm at most). Also keep leads short on connectors, this  N female flange for RG142 or .141 semirigid – easy install is perfect!

Note 2: A small heatsink is definitely needed!

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