[IRCA] 1700KHz results from 10-14

[Tim Hills <thills@xxxxxxxxxxxxx>]

I've been tweaking one of my active ferrite designs and so far it works 
quite well at the upper end of the MWBC band, esp. the X-band. After 
some investigation I realized that I slipped a decimal place and the 
preamp is optimized for 1.5 to 18 MHz rather than the planned 150 to 
1800KHz. Blame it on my gray hair I guess....

KVNS 4:01 GMT "Green Eyed Lady" playing and ID at 4:02, "Classic Hits 
KVNS" with a reference to 105.5 FM then into "Everlasting Love". Very 
readable with some fading and interference from KKLF

KBGG 4:05 GMT ID at 4:06 "The Champ" and "Iowa Sports Connection 
program" Coming in almost like a local.

UNID 4:09 GMT OM in Spanish, "futball" mentioned several times. My 
Spanish is very poor but the antenna bearing, language and sports format 
all point to XEPE. Heavy fading but would have been readable if I knew 
Spanish.

KKLF 4:50 GMT AM Coast to Coast with ID at 4:56. Station ID was "KLIF 
Talk 570" which is what KKLF simulcasts. Credit card debt commercial 
then into Nx. Some fading and interference from KVNS but good signal 
strength.

From my QTH KVNS and KKLF are only 3* apart yet I was able to peak one 
or the other with KBGG in the fringe of the null.

The reception pattern on this antenna is almost like a mufti-element 
beam without the reflector with a strong peak on one end and a weaker 
one( -3 to 6 dB) at 180*. The nulls are very wide, from about 45* to 
135* off the main peak on each side with a fairly steep falloff after 
about 10* from the peak.

Without a preamp the output of the antenna is very low and part of it's 
directional characteristics are in the preamp circuit so it does require 
a receiver with an external antenna input. Low noise MOSFETS developed 
for the cellphone industry make my life much easier :D

The antenna was indoors about 6'AG and the receiver was a DX-440.

Got the soldering iron heating up to correct my bout of cerebral 
flatulence. I hope to see what I can do with 540 tonight.

Tim Hills
Sioux Falls, SD




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