Re: [Elecraft] Seperate Receive Antenna

2015-02-18 Thread James Balls
Do you have a link to this please? Jim M0CKE On Mon, 02 Feb 2015 19:04:18 -, jim jbol...@outlook.com wrote: Dallas Lankford's page on Yahoo groups -- Using Opera's mail client: http://www.opera.com/mail/ __ Elecraft mailing

Re: [Elecraft] Seperate Receive Antenna

2015-02-02 Thread Wouter Jan Ubbels
Jan Ubbels Subject: Re: [Elecraft] Seperate Receive Antenna Jim How did you determine that the LZ1AQ amplifier is not a differential amp? the diagrams lead me to believe that it has differential inputs. Page 29 shows the specification item 10 which states that the inputs are balanced. What

Re: [Elecraft] Seperate Receive Antenna

2015-02-02 Thread David Cutter
apex. thanks again for the link 73 David G3UNA Subject: RE: [Elecraft] Seperate Receive Antenna Dave, Here is the quote from W8JI Start quote 10-29-2011, 05:36 PM #8 W8JI Quote Originally Posted by WV6U View Post Here is one broadband RX loop design that I found very interesting

Re: [Elecraft] Seperate Receive Antenna

2015-02-02 Thread jim
[mailto:d.cut...@ntlworld.com] Sent: Monday, February 2, 2015 10:43 AM To: jim Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Seperate Receive Antenna Thanks, Jim, that's opened out the discussion very well for me. I am not able to determine how bad this makes the performance, since

Re: [Elecraft] Seperate Receive Antenna

2015-02-01 Thread David Cutter
Jim How did you determine that the LZ1AQ amplifier is not a differential amp? the diagrams lead me to believe that it has differential inputs. Page 29 shows the specification item 10 which states that the inputs are balanced. What am I missing, where should I be looking? 73 David G3UNA

Re: [Elecraft] Seperate Receive Antenna

2015-02-01 Thread jim
: elecraft@mailman.qth.net; Wouter Jan Ubbels Subject: Re: [Elecraft] Seperate Receive Antenna Jim How did you determine that the LZ1AQ amplifier is not a differential amp? the diagrams lead me to believe that it has differential inputs. Page 29 shows the specification item 10 which states

Re: [Elecraft] Seperate Receive Antenna

2015-01-31 Thread jim
The LZ1AQ amplifier is NOT a differential input amp, rather it is referenced to ground. This can have significant issues as it relates to common mode noise. As a result of my research, I ended up with a Pixel loop. The amp has great characteristics, differential input, uses an A.C. wallwart

Re: [Elecraft] Seperate Receive Antenna

2015-01-31 Thread Mike va3mw
Jan What configuration did you use on your lz1aq loop? Mike va3mw On Jan 31, 2015, at 6:02 PM, jim jbol...@outlook.com wrote: The LZ1AQ amplifier is NOT a differential input amp, rather it is referenced to ground. This can have significant issues as it relates to common mode noise.