That's great, Jim!! Sounds like it's working well!! Have fun! I'm sure you will like it!
73, Charlie, K4OTV From: James Rodenkirch [mailto:[email protected]] Sent: Sunday, August 25, 2013 9:53 AM To: Charlie Cunningham Subject: RE: Topband: Two 2:1 transformers to choose from!! Got the delta loop up and wired over the past three days, Charlie!! Tried it out last night and, before the preamp died, I was seeing an S unit to two difference when switch between east and west direction on 80 meters and 40. The preamp died as I was getting on 160 BUT...I did use the preamp in my Argonaut VI, just to see how it worked and, while listening to some SSB stations I did a switcheroo (have a switch in the DC voltage line to the relays out at the antenna) and saw a solid 2 S unit difference on at least two of the stations. Comparing the noise level of my vertical versus the delta loop shows the noise level is reduced by at least 3 to 4 S units. So, something is "working" Hi Hi Conditions on 160 weren't great this morning AND the entire lash up at my operating table was very kluged - going to make up a DC power distribution box and add the switches (switch the relays in or out to switch direction from east to west or vice versa)o be and a T/R relay circuit (as soon as I find one and get the pars) so more 'work' and planning to be done. I have only had it up and running since yesterday afternoon so lots of "testing" still in order. I don't have any test equipment other than a DVM and a noise bridge but will be fun to play with it when signals are being heard. 72, Jim Rodenkirch K9JWV > From: [email protected] > To: [email protected]; [email protected]; [email protected] > Date: Thu, 22 Aug 2013 15:18:40 -0400 > Subject: Re: Topband: Two 2:1 transformers to choose from!! > > > That's great, Jim! Let me know how it plays! > > 73, > Charlie, K4OTV > > -----Original Message----- > From: Topband [mailto:[email protected]] On Behalf Of James > Rodenkirch > Sent: Thursday, August 22, 2013 3:00 PM > To: Charlie Cunningham; 'Mike Waters'; 'topband' > Subject: Re: Topband: Two 2:1 transformers to choose from!! > > When time permits, Charlie, I will do just that! Almost done with > everything up to the two boxes with the switchable components - resistor, > xfmr - as I await the xfmr(s) arrival. Outta be listening by Sunday > morning!! > > > From: [email protected] > > To: [email protected]; [email protected]; [email protected] > > Subject: RE: Topband: Two 2:1 transformers to choose from!! > > Date: Thu, 22 Aug 2013 14:41:40 -0400 > > > > Well, Jim > > > > Since you wound both transformers, why not try them both, and see if you > > can measure any difference? I' guessing you won't see much! > > > > 73, > > Charlie, K4OTV > > > > -----Original Message----- > > From: Topband [mailto:[email protected]] On Behalf Of James > > Rodenkirch > > Sent: Thursday, August 22, 2013 2:00 PM > > To: Mike Waters; topband > > Subject: Re: Topband: Two 2:1 transformers to choose from!! > > > > Thanks, Mike - will try the 2:3 ratio one first! > > > > > Date: Thu, 22 Aug 2013 10:21:14 -0500 > > > From: [email protected] > > > To: [email protected]; [email protected] > > > Subject: Re: Topband: Two 2:1 transformers to choose from!! > > > > > > P. 7-69 of Low Band Dxing (5th ed.) by ON4UN says a maximum of 4 turns > on > > > the low-Z primary for binocular cores. It might work, but there are > other > > > turns ratios you might try. > > > > > > Here is a list of turns ratios for those cores I made: > > > http://www.w0btu.com/Binocular_core_turns_ratios.pdf > > > If you get a 500 Server Error message, contact me directly and I'll > e-mail > > > it to you. > > > > > > 73, Mike > > > www.w0btu.com > > > > > > On Wed, Aug 21, 2013 at 3:49 PM, James Rodenkirch > > <[email protected]>wrote: > > > > > > > I received enuff "info" and thoughts to know I'll utilize the 5:7 > > winding > > > > version. > > > > > > > _________________ > > > Topband Reflector > > > > _________________ > > Topband Reflector > > > > _________________ > Topband Reflector > > _________________ > Topband Reflector _________________ Topband Reflector
