PA VHF and up

Amplifying the RF signal from an RFzero is really easy. For 50 MHz Sergey, EX9T, has designed two PA boards with on-board low pass filter and directional coupler too. Please see PA 50 MHz 25 W with AFT05MS031N and PA 50 MHz 50 W with RD70HVF1. Actually, the PA design is so versatile, that it can be used for any band from 28 MHz to 144 MHz as done by GB3MCB.

Below are some solutions for the 40 MHz, 60 MHz, 70 MHz, 144 MHz and 222 MHz bands. For 432 MHz and 1,3 GHz you may use a high pass filter and MMIC gain block to filter and buffer the signal. Then use a Mitsubishi power module RA07H4047M/RA30H4047M for 432 MHz and RA18H1213G for 1,3 GHz to boost the signal even further.


40 MHz or 60 MHz

For 40 MHz or 60 MHz the PA boards made by Sergey, EX9T, PA 50 MHz 25 W with AFT05MS031N and PA 50 MHz 50 W with RD70HVF1 can also be used with different component values. Please contact him directly using the email address from QRZ.com.


70 MHz

For 70 MHz the PA boards made by Sergey, EX9T, PA 50 MHz 25 W with AFT05MS031N and PA 50 MHz 50 W with RD70HVF1 can also be used with different component values. Please contact him directly using the email address from QRZ.com.

Another solution is to use an RA070608M, 7 W, or RA30H0608M, 30 W, power module from Mitsubishi. You can make the PCB yourself, find them ready made or buy a populated one from many different sources. Also the power module is available from many different sources. The RFzero is designed to drive a Mitsubishi power module directly.

Example of an RA30H0608M power module.

Here is a design by Bo, OZ2M.

If you cannot find a board that suits your need try to look for one for 144 MHz since the RA07M06087M/RA07M1317M or RA30H0608MM/RA30H1317M modules, and sub-variants, have the same physical size and location of the terminals.


144 MHz

For 144 MHz the PA boards made by Sergey, EX9T, PA 50 MHz 25 W with AFT05MS031N and PA 50 MHz 50 W with RD70HVF1 can also be used with different component values. Please contact him directly using the email address from QRZ.com.

Another solution is to use an power module from Mitsubishi.There are really many different types of modules and power levels available, e.g

The RFzero is designed to drive a Mitsubishi power module directly.

You can make the PCB yourself, find them ready made or buy a populated one from many different sources. Also the power module is available from many different sources.

Example of an RA60H1317M power module.


222 MHz

A solution is to use an RA07M2127M, 7 W, or RA30H2127M, 30 W, power module from Mitsubishi. You can make the PCB yourself,  find them ready made or buy a populated one from many different sources. Also the power module is available from many different sources. The RFzero is designed to drive a Mitsubishi power module directly.

Example of an RA30H2127M.

If you cannot find a board that suits your need try to look for one for 144 MHz since the RA07M2127M/RA07M1317M or RA30H2127M/RA30H1317M modules, and sub-variants, have the same physical size and location of the terminals.


Power modules

Module
name
Max volt
[V]
Nominal
voltage [V]
Fmin
[MHz]
Fmax
[MHz]
Pin
[mW]
Pout
[W]
Efficiency
[%]
Package
RA07H0608M13,212,5688830738H46S
RA07M0608M9,27,2668830745H46S
RA30H0608M17,012,56688503040H2S
RA07M1317M9,27,2135175206,545H46S
RA08H1317M13,212,513517520840H46S
RA08N1317M12,59,613517520850H46S
RAI3H1317M17,012,5135175501340H2S
RA30H1317M17,012,5135175503040H2S
RA30H1721M17,012,5175215503040H2S
RA35H1516M17,012,5154162504050H2S
RA60H1317M17,012,5135175506040H2S
RA07M2127M9,27,221527020745H46S
RA30H2127M17,012,5210270503040H2S
RA07H3340M13,212,533040020740H46S
RA07H4047M13,212,540047020740H46S
RA07H4452M13,212,544052020740H46S
RA07M3340M9,27,233040050740H46S
RA07M3843M9,27,237843050740H46S
RA07M4047M9,27,240047050740H46S
RA07M4452M9,27,244052050740H46S
RA07N3340M12,59,6330400207,543H46S
RA07N4047M12,59,6400470207,543H46S
RA07N4452M12,59,6440520207,543H46S
RA13H3340M17,012,5330400501340H2S
RA13H4047M17,012,5400470501340H2S
RA13H4452M17,012,5440520501340H2S
RA30H3340M17,012,5330400503040H2S
RA30H4047M17,012,5400470503040H2S
RA30H4452M17,012,5440520503040H2S
RA45H4047M17,012,5400470504535H2S
RA45H4045MR17,012,5400450504535H2RS
RA45H4452M17,012,5440520504535H2S
RA55H3340M17,012,5330400505535H2S
RA55H3847M17,012,5380470505538H2S
RA55H4047M17,012,5400470505535H2S
RA55H4452M17,012,5440520505543H2S
RA60H4047M117,012,5400470506040H2M
RA60H4452M117,012,5440520506040H2M
RA03M8087M9,27,2806870503,632H46S
RA03M8894M9,27,2889941503,632H46S
RA03M9595M9,28,0952954503H46S
RA06H8285M17,012,58208511635HIIS
RA13H8891MA17,012,58899152001330H2S
RA13H8891MB17,012,588091511335HIIS
RA20H8087M17,012,5806870502025H2S
RA20H8994M17,012,5896941502025H2S
RA18M1213G17,012,5124013002001820H2S