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.

 


                    I have a new rig that was a Christmas Present from Mum & Dad.

                                                           An Anytone AT-588 68 - 88mhz

                          

 

 

                                                          My other 4m Rig is a Key KME80

                           

                                                                     

There are a few Parrot Repeaters and Echolinks on 4m.

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

 

 Link to MB7PA

 

MB7FM in Tring   ON AIR Again     07/10/2016

 

 

 I have now sold the 4m Transverter and PYE A200 Amplifier.

Now using my Icom IC 7100.

Awaiting good radio conditions to test the Icom.

                                       

 

                                            
   

 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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