| Dave,
I wish I could give you a talk, but journeys of the order of 1000 km are now beyond me.
Here are my comments on the technical aspects of 2200 m. No doubt some more active practitioners will be able to correct my misunderstandings.
Looking at the DHARS website I get the impression that the top band antenna is a vertical (40 m?). This might be worth investigating for 136, as would a flat-top of two or three well-spaced wires about 40 m long at a height of perhaps 10 m, such as I used a few years ago and with an ERP of 2 mW was received in Hertfordshire.
On the receive side, a very large antenna is not always necessary. Indeed it can sometimes be a disadvantage if you have high power neighbours or interference sources. For many of my experiments I used a 2 x 2 m rectangular loop oriented for minimum signal from the nearest LW broadcast station (France Inter which closed down a few years ago). I am about to rebuild the loop as it was demolished by a wild animal from the local forest.
Although some people concentrate on “best DX”, and have obtained good results, many experimenters on that band concentrate on modulation methods and similar aspects of amateur radio.
73 John F5VLF
is on a farm with a 20 acre field. In principle we could do some LF stuff, but know little about it. I wonder if anyone in/around Essex would be willing to give us a talk one Monday evening? (Postcode CM3 6DU). We can pay traveling expenses. We have a quarter wave on top band, some beverage antennas, beams for 2 m, 6m and a tri-bander. But we have the space to run some long wires.
Dave, G8WRB.
-- Dr David Kirkby Ph.D C.Eng MIET Kirkby Microwave Ltd Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom. Registered in England and Wales as company number 08914892 https://www.kirkbymicrowave.co.uk/Tel 01621-680100 / +44 1621-680100
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