There are a very interesting series of loops and amplifiers coming out of Cross Country Wireless, in particular the latest uses an aluminium bicycle wheel rim, note just the rim which can be bought at a modest price. On a suitable base it is self-supporting and needs to be simply cut with a hack saw. http://www.crosscountrywireless.net/loop_antenna_amplifier.htm
I have yet to try this one but other amplifiers from this manufacturer have performed very well for me. David G3UNA/G6CP -----Original Message----- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of rich...@rodsley.net Sent: 09 December 2019 10:41 To: 'Roger Kennedy'; topband@contesting.com Subject: Re: Topband: G3YRO 160m Receiving Loop I have a 300 ft Beverage running E/W which I use for most DX reception. However for most of its length it does run immediately over a wire mesh fence about 6 inches below it which makes it lose a lot of its front to back directivity. For the last few weeks I have also been using a Wellbrook loop mounted on a rotator about 6 feet above ground and situated about half way along the Beverage. This gives about the same S/N ratio on DX sigs as the Beverage when lined up with it with the advantage that I can also use it for N/S reception. For EU everything is much stronger on the inv L TX antenna but most DX is inaudible. Richard -----Original Message----- From: Topband <topband-boun...@contesting.com> On Behalf Of Roger Kennedy Sent: 09 December 2019 10:15 To: topband@contesting.com Subject: Topband: G3YRO 160m Receiving Loop I have always just lived in a "normal" house in a normal street in the city . . . so never had room for a Beverage. Not even room for a Vertical Tx antenna, as no space for the radials. (and couldn't go high enough) Most people are amazed that my Tx antenna is a horizontal Halfwave Dipole, just 50ft high, fed with coax, yet I still work all over the world on Top Band! (the wire goes outside my property) However, a couple of years ago I did feel I could benefit from a lower noise/directional Receive antenna, and made what is basically a Frame Aerial. It works very well, and being vertically polarised (unlike my Tx antenna), it's interesting to see the difference in strength on signals, depending on the propagation. (it's just up in my loft, pointing East-West) Given the problems reported with a K9AY, you might like to try it, as it's very simple and cheap to make - details here: http://rogerkennedy.co.uk/g3yro/160mrxloop.htm Roger G3YRO _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
