Roger G3XBM's (Mainly) Amateur Radio Blog

This dates back many years and is not recommended when 6m is "open" as it has been recently.  On the other hand, it makes a nice h...

There is not much call for AM on 6m these days. That is a pity as designs can be simple and effective. This was my Sixbox that appeared in G...

6m is sometimes called "the magic band" as it can open when least expected to incredible distances. In early July I have often co...

This design, from many years ago, was designed as a simple rig for local natters. It is ideal for use when the band is not open for DX. See ...

If you are after ideas for a cross town natter box, you may get some ideas from my Sixbox. This is not a DX transceiver, but is useful for c...

Some years ago I had a need for a simple local natter box for 6m so the Sixbox was born. This was not designed as a DX rig but just for loca...

This was missing from my main website. It has now been added. I did not realise it was missing! See  https://sites.google.com/view/g3xbm4/ho...

It was way back in 2009 that I designed and built the Sixbox rig. Unlike the Fredbox for 2m, the Sixbox did not use a PCB.  It is not suita...

As we slowly progress to "quiet sun" years, it is worth remembering that our VHF bands are useful for local QSOs. Some years ago...

The December 2012 edition of " Practical Wireless " has my article about the 2m AM Fredbox and the 6m AM Sixbox transceivers tha...

Yesterday, someone suggested that I build a simple 10m AM rig. Now clearly the best option would be a DSB transceiver for which I have many ...

The Sixbox 40mW AM transceiver for 6m. Maybe a Fourbox will follow? The experiments last week by G6ALB and I confirm that to talk over a...

Joe Milbourn has a nice photo of his version of my Sixbox QRP 6m AM transceiver . It looks he's made some changes including the addit...

As promised, I've put a small video about the Sixbox 6m AM transceiver on my YouTube channel. You will recall that the Sixbox was a sma...

The latest copy of GQRP's quarterly magazine SPRAT arrived here today and it was nice to see my little Sixbox 6m AM transceiver feature...

A few months ago I was asked by Junichi Nakajima-san, JL1KRA , if he could translate an entry on my blog about the Sixbox 6m AM transceiver ...

This afternoon I worked G3PTQ in Bottisham, 6kms away with the 50mW Sixbox AM transceiver . Report was RS41 (weak, but 80% readable). Then ...

This evening I managed 16kms contacts with both the SixBox 6m 40mW AM transceiver and with the Fredbox 2m 10mW AM transceiver. QSOs were f...

Back home in Cambridgeshire now and, sadly, was unable to find anyone within a 15-20 mile radius when in S.Devon with whom to test the SixBo...

Two local tests with stations on 6m AM have shown just how noisy the band can be when using this mode. M1KTA was 18kms away and M1MAJ around...