Hei, tässä kokemuksia ALA100 antennista jotka Alan Gale ystävällisesti lähetti. 73 JP -----Alkuperäinen viesti----- Lähettäjä: Alan Gale <alan.gale@xxxxxxxxxxx> Vastaanottaja: jp@xxxxxxxxxx <jp@xxxxxxxxxx> Päivä: 27. elokuuta 2000 19:39 Aihe: ALA100 >Hi Jarmo, > >Andy from Wellbrook asked me if I could send you a copy of my review >of the ALA100, and I've attached a copy. The review was written about >two years ago when I used to edit the 'Beacons & Utes' column for the >Medium Wave Circle, but it's still my number one antenna yet, and used >all of the time, and I really do like it. > >I use both the ALA100 and the ALA1530, but for LF work at least I mainly >use the 1530 just for direction finding. The ALA100 is much 'quieter', >and by that I mean that with a larger loop attached the amplifier is >run with a lower gain and therefore generates less amplifier noise on >weak signals. As you can imagine, when trying to hear very weak signals >such as beacons (my main interest), lower noise is more important than >higher gain. Increasing the size of the loop produces greater input >signal levels, and at present my loop is set up in a 'delta' confiuration, >with a top section of 15 metres length, and two sloping sides of about >10 metres each, overall circumference about 35 metres. I haven't had any >problems with using a loop this size, though if high powered broadcast >signals are your main interest a smaller loop might be better and prevent >overload problems. > >I hope the review helps to explain my findings with the aerial a little >better, but if you do have any further questions that I might be able >to help with just let me know. > > > Good listening and 73 for now. > > > Alan. > > > > >
Attachment:
ALA100 Review.doc
Description: MS-Word document
---------------------------------------------------------------------- From: Alan Gale G4TMV Location: North-West England. IO83VP Lancs 53:39.3N 02:10.6W. Interests: Beacons, Search & Rescue, Maritime, Scanning, TVDX. Website: http://www.alan.gale.clara.co.uk/ ----------------------------------------------------------------------