Series Instruction Video


Video Transcript

Hello and welcome to Matchmaster, for the best,

Today, I am going to take you through the features and set-up of our Johansson masthead amplifiers.

We will start with the 10MM-J34BF-4G.

Has a frequency range for VHF input of 170-230 Megahertz and for UHF input of 520-694 MHz.

This is a VHF/UHF Amplifier with a maximum gain of 28dB for VHF and 34dB for UHF, it can be used as a combination input amplifier by setting the selector switch to position 1 or used purely as a VHF or UHF amp or both simultaneously by setting the selector switch to position 2.

It has separate gain adjustment of 19dB for UHF and 13dB for VHF to adjust to desired output level, VHF can be sloped output 13-28dB or flat output 13dB or 28dB

It has a built in low pass 4G filter at 694MHz

It comes with a Heavy duty UV stabilised casing with cable tie for fitting outdoors. On the back of the amplifier case, there is a slot through the side. Take your cable tie and insert it through the slot, ready to fasten to the mast. Take the amp across and fit it to the mast itself. Take the cable tie in and feed it through and pull it tight, til it is secure on the pole. Then use your side cutters to cut the tails off.

It features a new heavy duty gate and sliding cover to give easy access to servicing the cable connection points. It also has additional room to easily fit modern compression connectors.

Powered by 14 volt DC power only, not compatible with AC power supplies.

It has a non-corrosive circuit board with high quality components.

Singular input for either UHF or combination antennas

One input for VHF antennas

One output for the TV system.

Gain control ports has an independent VHF & UHF gain controls to adjust the level to suit your system. With the F connectors do not over tighten, just at finger tight and do not use any hand tools as you may damage the circuit board of the amplifier. Once you finish connecting your input / output cables, you can close your cable management gate and slide the face plate down of the amplifier. Now it is weather protected and ready to go.

Once you have your TV lead securely connected to your power supply, then connect it to your wall plate, if it is an F type wall plate, the power supply will connect directly to it without any adaptors.

If you have an older style PAL fitting wall plate, the PAL ‘F’ adaptor comes with the power supply, screw it on the power supply finger tight. Connect power supply to the wall plate. Once power supply is connected securely to the wall plate, take the power pack, connect it to the outlet and switch on the power supply and the system will be ready.

The LED power indicator on the amplifier will flash to show when power is on.

Lastly, take the other end of the TV lead to the antenna input port of your television, you are now ready to tune your TV and enjoy your services.

For further information, please call us on 1800-AERIAL or visit us on

Thanks for watching.