I recommend "Path Profile" by Mike Willis - available from G0MJW web pages. Caveat:- As far as I know, all free software of this type use a "bald earth" model; that is to say there is no information a

'Morning all I'm looking for an offcut, about 3m long, of LDF2-50. Used condition is OK, so long as there is no damage. TIA John G4ZTR

All Many thanks for your thoughtful suggestions. I’m really rather cautious about sending 240v mains up the mast ! Perhaps the suggestion of 110v is as far as I would go – in fact I quite like that id

Morning all I'm looking at my requirements for a stable 13.5v supply at around 20 amps to the top of my mast. If the supply voltage sags under load (which it will), I anticipate that amplifier(s) "up

Received mine (transverter and PCB antenna) today. PCB is 0.76mm thick. Return loss of the antenna is 25dB at 3400MHz. Of course, that might mean it's a dummy load - further tests will come later. Cav

Hi David I was in a similar position a few months ago. The main reason for my message is to suggest a source that you might wish to steer clear of ! One potential source is DK2FD: http://www.dk2fd.de/

Firstly, many thanks for the helpful comments yesterday. I went with my gut feeling, and pointed the dishes downwind, and all was well. There's more to come later today, probably worse than yesterday

I have two mesh dishes on my mast. It's not obvious (to me) whether to point them facing the prevailing wind, away from it, or somewhere else. What's the usual practice ? I'm not keen on luffing the m

Who’d be a beacon keeper, eh ! Thanks for all your efforts – much appreciated. John G4ZTR

Thanks for the info Nick It’s a constant source of amusement to me that Martlesham is every bit as strong as I would expect on 23 and 13 (S9 plus 20 or 30dB) and about 549 on 3cms ! Yes, looks like PK

Sam I’m at risk of making 2 + 2 = 5 …….. is Martlesham on 3cms running low power at the moment ? And since when ? I have a remarkably obstructed path, presumably trees, and it’s not the strength I wou

Well, if it’s a DL6WU design, it should work well. I’ve built a couple a while back and the RL was good and a decent match can be achieved over a wide bandwidth – more so than some recent highly optim

Hello Chris No experience of this aerial. But from the photo, D1 looks quite close to the DE, although that’s not particularly unusual. Is it possible that D1 and its mounting clip can be turned 180 d

Seems to me that GB3PKT on 3cms is weaker than usual. But in case it's an RX problem here, does anyone else concur or disagree ? Regards John G4ZTR

All Many thanks to those of you who have taken the trouble to reply with your rotator suggestions. I will sit and ponder on the information received, with a plan to make some changes when the winter i

'Evening all What rotator do you use at home for the microwave bands ? I have a Yaesu G-1000 here. It's man enough for my couple of dishes (2m and 1m) and a small yagi, but it has a backlash of about

Beacon is audible in JO01. Phil - be careful what you wish for - I believe that rather a lot of wind is forecast for the coming few days ! John G4ZTR

Hello Ed Martlesham runs PI4 on 13cms. That’s why you had no decodes on WSJT !Details are on Beaconspot. Regards John G4ZTR

Busy here too ……………. In the workshop Pleased to say that I have made a small batch of 13cms interdigital filters which are now available from my web shop:- www.aerial-parts.co.uk Please, no pushing an

I have plenty of that “older” cable here, and some is in use – round the rotator for example. It seems far more reliable than some of the modern flexible offerings that use paper-thin foil as an excus