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Re: [IRCA] Phaser phasing phased...

Something else I can work on developing into a robust circuit board! 

Colin Newell - Victoria - B.C. CANADA -

> On Nov 13, 2018, at 9:02 AM, Mark Connelly <markwa1ion@xxxxxxx> wrote:
> 
> You can be guaranteed - at least half the time - to have significantly different null-target signal strengths if, as with my present arrangement, you are using feed from transformers on opposite sides of the same Flag, SuperLoop, Kaz, or DKAZ.
> 
> Cases such as loop versus vertical whip or longwire, where one antenna is more directive than the other, are also likely to give you situations of widely differing "pest" direction signal strengths.
> 
> The array case of two identical pattern / sensitivity antennas spaced 30-60m typically (end-fire) or >60m (broadside) may be the most useful application for phasing, certainly for broadband null performance, for many.  This scheme is not implementable here.
> 
> Other than using a different buffer amplifier (assembly A1 in drawing below), the Quantum Phaser is similar to the DXP-3:
> https://www.qsl.net/wa1ion/dxp/dxp3.pdf
> 
> Ignore all the dead web links as AOL and several other hosting services were killed off over the past 15 years.
> 
> Gerry Thomas had incorporated elements of DXP-3 into the Quantum Phaser and gave it a higher gain buffer amp.
> 
> What can be done in high signal areas is to replace the amplifier with a stepdown transformer in the 9:1 to 12:1 range to get the medium-impedance range at the summing junction down to ~50 ohms.
> 
> A switching arrangement (3PDT: in, out, power) can be done to swap between passive and amplified or you can just go passive and, when desired, amplify externally either ahead of one or both of the inputs or after the output.
> 
> I'm copying Neil on this discussion.
> 
> Mark Connelly, WA1ION
> South Yarmouth, MA, USA
> 
> 
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