Re: [IRCA] phasing and TP's

[Nick Hall-Patch <nhp@xxxxxxxx>]

At 18:19 04/11/2006, you wrote:

>Finally Walt, have you ever successfully used your phaser to knock down the
>signal of an adjacent channel domestic to help improve the S/N ratio of a
>TP? If a phaser can give me an edge in the city for hearing TPs better, I'd
>best give this type of accessory another try!

Funny you should mention that, Guy....the latest DX Monitor has me 
crowing in DXWWW about logging NHK1 on 891 after phasing down local 
CKMO-900, 10 kw at 4.7km, beamed (not tightly) roughly towards me, 
half ? of that distance across salt water.  That was very gratifying.

My phaser is based on Mark Connelly's DXP-3 design; I think that the 
Misek design looks like it should work with lower loss than the 
DXP-3, as well as getting around the LC tuned phasers' possible 
problems with nulling the carrier but not the sidebands.  The latter 
problem is one reason why I wanted to try the DXP-3.

In practice, I found in using Walt's Misek phaser, that they're 
"different" but it was hard to say that one was definitely better 
than the other in all or even in most cases.    They're both pretty 
easy to use as well.   If I had to choose, I'd probably give the nod 
to the Misek unit, but then Walt hasn't heard NHK1 on 891 yet (and I 
haven't heard WGY...though there was "Coast to Coast AM" last night 
in KGO's null).  I haven't foung overload  traceable to either unit 
yet, but have had the northern Flag give me problems; still trying to 
track that down . (1070 is 10 kw at 2.9 km, a strong beam in this 
direction (approx 2V/m at 1km per AMSTNS program), some also across 
salt water, but that's it for our locals)

As for antennas, phasing the ALA100 against a 14m sloper has the most 
signal output and can be very satisfying, but the 891 logging was the 
north Flag against the west Flag, which in many cases requires a 
little more (tuned) amplification to bring the DX up, as the Flags 
don't have the same output level.

best wishes,

Nick




****************************************************************************
Nick Hall-Patch
Victoria, B.C.
Canada

**************************************************************************** 

_______________________________________________
IRCA mailing list
IRCA@xxxxxxxxxxxxxxxx
http://arizona.hard-core-dx.com/mailman/listinfo/irca

Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers

For more information: http://www.ircaonline.org

To Post a message: irca@xxxxxxxxxxxxxxxx