I'm sure that's a good one, Mike. When I built my RX loop, I was busy and In a hurry, and I borrowed one of the old original AMECO tube preamps from my friend, Bill, K4CIA. Worked great on 160,80, 40 and 30m with the terminated loop. The AMECO preamp was tunable, rather than broad band.
73, Charlie, K4OTV From: Mike Waters [mailto:mikew...@gmail.com] Sent: Thursday, August 22, 2013 10:41 PM To: Charlie Cunningham; topband Subject: Re: Topband: Two 2:1 transformers to choose from!! This is the preamp I use. The circuit is from Solid State Design For the Radio Amateur, C 1977 ARRL. W8JI suggested it to me over 30 years ago (but I think he has much better preamp designs since then). http://www.w0btu.com/W0BTU-broadband-preamps.html W7IUV enhanced it. 73, Mike www.w0btu.com On Thu, Aug 22, 2013 at 9:25 PM, Charlie Cunningham <charlie-cunning...@nc.rr.com> wrote: Well, that FO0AAA KAZ terminated loop has pretty good gain as terminated RX loops go, so I wouldn't expect the system to be noise starved, but the gain opf that loop is of the order of -30 dBi at 160, so a preamp is in order. _________________ Topband Reflector