Hi Chris, I've found additional info on the broadband Wilkinson combiner on my hard disk, which I believe stems from an old ANZAC data book. The info refers to T2 and there are two ways of how it can
Why not keep it simple, and do it like the Decca transmitters? Forget complicated splitters/combiners with messy deliberate isolation. You are combining identical signals so that sort of design is
Any issues in switching modules in /out ... simply a multi primary transformer ? G, From: [email protected] Andy Talbot Sent: Monday, April 10, 2017 7:49 PM To: [email protected] rsgb_l
Any issues in switching modules in /out ... simply a multi primary transformer ? G, From: [email protected] Andy Talbot Sent: Monday, April 10, 2017 7:49 PM To: rsgb_lf_group@blacksheep.
Clever ... The coupling circuits are series resonant low=z ? , so the transformer must be acting as a step up ... which means its acting like a virtual earth, each amp is looking into a very low z ,
Hello Andy, OK, I can see the elegance in that, but pardon the probably daft question, but at the combining output transformer, is its input taken from my existing output transformers' secondary wind
Hello Clemens, Thanks for the images, appreciated, busy with work again, but will get onto more playing with combiner experiment ASAP, those N1BUG contacts are fickle, just a bit more power, or a tre
If your PAs are the push pull type using a transformer, you'll have to keep those, and take their secondary winding to the combiner. Not ideal but not a lot you can do if you use that sort of desig
I've been reading all this with great interest as I too am hoping to combine two LF PAs. On those fickle N1BUG contacts -- Yes, more and more so I fear. It's a subject for another thread but some key
Hello Paul, Have a look on the WSPR charts and let me know if you see a rarely or unused frequency and I will go through the saga of fiddling with my overly sensitive variometer and move off 137.550
Hello Andy, Replies should just go to the list, I am not very good with GMAIL, I had to set up an account to use the Blacksheep group as it was spitting out my old e-mail address i use for everything
Oops, that should have read V <= 4.44 .F.N.A.B (V RMS) You want to keep B down below some value where it drives teh core into saturation / non-linearity. But not so many turns that copper los
