Re: [IRCA] Ferrite antenna

[Ira Elbert New III <ien3@xxxxxxxxxxx>]

Where did you get the ferrite rod?

Bert New
Watkinsville, Georgia
Proudly Serving You Since 1964!




> From: bubba@xxxxxxxxxxxxxxxxxxxx
> To: irca@xxxxxxxxxxxxxxxx
> Date: Wed, 3 Nov 2010 22:29:03 -0400
> Subject: [IRCA] Ferrite antenna
> 
> Yesterday I had some time so I put a 24" ferrite rod antenna at the top of 
> my 80' tower.  Reason was to try to get away from the noise.  In the house, 
> noise is enough to bother semi-locals especially at the bottom of the band.
> 
> It did reduce the noise and oddly it increased the signal levels by at least 
> 10db.  I did a scan through the dial from that antenna and then again using 
> an identical one that's in my truck.  Noise did seem to drop.
> 
> It's set to null in the direction of New York City.  WFAN-660 is down to an 
> unlistenable level.  Other stations are also minimised.  At night it does 
> work decently.  At some point I may bring a rotor up there so I can actively 
> null stations.
> 
> On another matter, I have an issue with the SDR-14.  When I upgraded the 
> Spectravue software the gain dropped a lot.  In the past I could see peak 
> carrier levels of around -20 on the waterfall.  Now it's closer to -80db. 
> Still can hear most things, but it seems quite deaf in comparison.  I have 
> set to maximum gain for both IF and RF.  Bringing it down from that makes 
> things inaudible.  I brought in the Palstar radio from the truck and hooked 
> it up to the output of the preamp.  Locals were close to S9+40 on the meter. 
> Plenty of signal.  I went through every possible selection on the menu and 
> nothing brought it back.  Anyone else notice this?  Maybe there's a failure 
> of an amplifier or other component in it.  Everything else works correctly. 
> Just not much sensitivity.
> 
> Craig Healy
> Providence, RI
> 
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