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what does it mean when a high powered station overpowers a lower powered one

143.127.128.10
Posted on October 12, 2009 at 08:40:00
LousyTourist
Audiophile

Posts: 1237
Location: Frigid Minnesnowta
Joined: August 14, 2006
 my cheap Rat Shack RS-21 FM radio at work will not pick up my favorite radio station, 89.3, because another radio station 95.5, gets picked up when the dial is near 89.3.

Is this a cheap antenna (I have rabbit ears with limited options to align in my cubicle) or a cheap tuner section in this radio?


The political problem of mankind is to combine three things: economic efficiency, social justice and individual liberty.
-- John Maynard Keynes
RE: what does it mean when a high powered station overpowers a lower powered one, posted on October 16, 2009 at 07:54:31
Neff
 When two stations are as close in frequency as the FCC allows, the weak station can disappear due to what is called capture effect with the AFC (automatic frequency control) on. Another issue is poor tuner selectivity. Like any radio, some tuners are better than others with regard to selectivity & sensitivity.

Oh ya........, posted on October 16, 2009 at 18:13:36
Neff
 Your RS tuner is awful with that frequency spread.

Eli nailed it, 6.2 Mhz apart and it can't cope?, posted on October 13, 2009 at 19:36:37
Timbo in Oz
Audiophile

Posts: 11394
Location: Canberra - in the ACT - SE Australia
Joined: January 30, 2002
 yes, there could be something in the office making it more difficult.

?

Well, many SS tuners are quite poor at rejecting strong local signals outside band II. Our homes and offices are full of RF sources these days.?
IT!? Or ICT as it is now known in government circles in Aussie.

Here's two experiments, try increasing one rod to maximum, and t'other to whole lot less, close to vertical and then rotate the rabbit ears. There just might be one position where it isn't so bad, note the compass bearing through both rods, maintain that aim, and then try increasing the length of the second rod, and change the angles.

Then - take the RS21 and the rabbit ears home, and see if the problem recurs, noting the change to where the two stations are in relation to your home when compared to the office.


Warmest

Timothy Bailey
The Skyptical Mensurer and Audio Scrounger

And gladly would he learn and gladly teach - Chaucer. ;-)!

'Still not saluting.'

http://www.theanalogdept.com/tim_bailey.htm
RE: Timbo, I'd kiss you if you weren't so ugly, posted on October 14, 2009 at 13:59:48
LousyTourist
Audiophile

Posts: 1237
Location: Frigid Minnesnowta
Joined: August 14, 2006
 I had both arials up all the way and got nothing that way... never thought the issue might be too much antenna. I shortened one all the way and got a fuzzy signal, but more than I had before. No amount of re-lengthening helped, nor positioning, but when I also lowered the other arial to about 2 feet, the signal is marginal but acceptable.

I gotta get a better office radio....

The political problem of mankind is to combine three things: economic efficiency, social justice and individual liberty.
-- John Maynard Keynes
ah, I see you have noticed that post of me and my neice, couple yrs back?, posted on October 16, 2009 at 13:31:50
Timbo in Oz
Audiophile

Posts: 11394
Location: Canberra - in the ACT - SE Australia
Joined: January 30, 2002
 She at least IS good looking.

people say I have a lovely smile ......

It is always good when advice helps. As George Carlin had the Spanish priest say in the skit 'Spanish Confession'.

'hiss hokay, man'

;-)


Warmest

Timothy Bailey
The Skyptical Mensurer and Audio Scrounger

And gladly would he learn and gladly teach - Chaucer. ;-)!

'Still not saluting.'

http://www.theanalogdept.com/tim_bailey.htm
RE: ah, I see -- He is VERY ugly! nt, posted on November 3, 2009 at 16:41:11
goldenthal
Audiophile

Posts: 128
Location: Ontario
Joined: March 28, 2003
 n

LOL, 're you gunna post a photof of your dial then, maaate, posted on November 5, 2009 at 20:54:12
Timbo in Oz
Audiophile

Posts: 11394
Location: Canberra - in the ACT - SE Australia
Joined: January 30, 2002
 ;-)!

'owyer goin' then, eh?
Warmest

Timothy Bailey
The Skyptical Mensurer and Audio Scrounger

And gladly would he learn and gladly teach - Chaucer. ;-)!

'Still not saluting.'

http://www.theanalogdept.com/tim_bailey.htm
A tuner with a better selectivity spec might help, posted on October 12, 2009 at 14:59:31
1973shovel
Audiophile

Posts: 2364
Location: Greenville SC
Joined: February 25, 2007
Contributor
  Since: June 17, 2009
 as might a directional FM antenna, but that's probably not an option at work. I'd test out a different radio to see if that helps.

Good luck with it.

RE: what does it mean when a high powered station overpowers a lower powered one, posted on October 12, 2009 at 12:00:23
Eli Duttman
Audiophile

Posts: 6155
Location: Plainsboro, NJ
Joined: March 31, 2000
 The tuner sucks!

Eli D.

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