Welcome to the G6OHM Website

4 Meter Page

 I started using 4m back in around 1982 when it was given to class B amateurs.

 My first radio was a PYE Westminster.Power output was 12 watts and the antenna was a dipole.


  Later i added a preamp to boost receive signals and put up an HB9CV beam antenna.



4m Band Plan




 Now more countries and people are using 4m. Please don't block the calling channel with your QSO.                    If you have a synthesized rig, there really is no excuse for not QSY-ing. If a lack of crystals mean that you can't find a clear channel, then please be considerate if you stay on 70.45: keep the overs short, and listen carefully between them for other stations trying to call in.

   Equipment i am using now               

                                                           An Anytone AT-588 68 - 88mhz




                                                          My other 4m Rig is a Key KME80



                                  For 4m SSB i am using a Icom IC 7100. Antenna half wave dipole.



 There is a Parrot Repeater and Echolinks on 4m.

A Parrot repeater  stores and forwards your audio and replays it on the same frequency.


MB7FM in Tring   ON AIR Again     30/07/2017


News on MB7PA. I have been informed MB7PA has been closed down




 If you want any more information on 4m try this web site.


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10m FM

                                   SR5KP in Poland



The 28MHz (10m) band is located at the higher end of the HF spectrum and spans from 28-29.7MHz.

Because of this, during the period of sunspot minimum the band can be very quiet. Generally this is due to lack of use rather than poor conditions. During sunspot maximum and periods of high sunspot activity however, the band becomes wide open to world wide DX.

During the summer months F2 layer propagation and short skip Sporadic-E can bring unexpected contacts into the USA and Europe even during periods of low sunspot activity. Local communications of several hundred miles is possible on FM during tropospheric openings. If you are an early riser these 'tropo' openings are often at their best around sunrise.

FM operation is centered around 29.6MHz which is used as the calling frequency. It is ideal for local mobile communications with ranges of up to 30 miles possible. Being so close in proximity to the CB frequencies however, it can on occasion be open to abuse by non-licensees at the lower end of the allocation, again due to lack of use. Whilst on the subject of CB, many amateurs have actually converted CB equipment to ten meter use


There are numerous 10m FM repeaters around the world. These use a -100kHz shift and input frequencies start around 29.5MHz.



I have always had a great passion for 29mhz fm Repeaters.

When I was an SWL ( short wave listener ) I use to listen to the Repeaters coming in from the USA like W1OJ in Boston.



CB verticals can be adjusted to work well on 29mhz fm. Here at G6OHM I  use an Antron 99 antenna  on a 8ft pole.


 When working  repeaters adjust your Deviation to narrow FM this stops the repeater from clipping.

Remember to put in the repeater shift !


 I have just found out there is a new Band plan for the 10fm section of the band. This was brought in January 2012


If you want a full listing check out the link below

 full listings

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 Here is a very useful site to look at HB9HD.

 Click here for HB9HD

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