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Subject: Re: Another (FM) antenna question
References: <email@example.com> <3DEDA415.65EF53A1@one.home>
X-Newsreader: Forte Agent 1.92/32.572
Date: Wed, 04 Dec 2002 18:43:36 -0500
NNTP-Posting-Date: Wed, 04 Dec 2002 18:43:45 EST
Organization: Bell Sympatico
On Wed, 04 Dec 2002 00:43:33 -0600, Bob wrote:
>Mark Zenier wrote:
>> A scan of an old copy of the FCC Broadcast Regs (47CFR73) shows that
>> 93.3 (channel 227) is allocated for stations in Haltom City and Midland,
>> Texas. (And maybe more, the US National Archives site was reeaaaaalllly
>> sllooooowwww, so I couldn't get a searchable file *, and I gave up and
>> just used a paper copy and my eyeballs). 92.5 is allocated to Dallas.
>just to follow up... Haltom City eh? That makes my distance
>estimate eerily accurate (for just guessing, based on road-trip
>reception), but more WNW than WSW. And 92.5 would be almost due
>north and about half the distance. Not too bad for directional
>antenna purposes... I may try to build one. (yeah, I'm cheap)
I don't get it .
Are the two stations in line with your location ?
If they are't and if the signal from the wanted station is sufficient
, you may get better results with a simple loop antenna .
A simple loop has a figure of 8 pattern. By pointing one of the two
nulls to the interfering station you may reduce the interfering signal
to a satisfactory performance.
A folded by pole antenna is the easier antenna to make. I has an
impedance of a bit less than 300 ohms. If you are using twin lead just
connect the wire directly to the antenna . If you are using coaxial,
(prefered) buy a transformer at Radio Shack .
A directional antenna may not have ANY null.
I know I am repeating myself but, if the two stations are in line
with your location forget the antenna solution. It won't work.
A directional antenna will increase the signal of the two stations
equally. Is like inserting an very good amplifier between the antenna
and the receiver. It doesn't work.
>Anyway, not much luck with the stub thing... may have hooked it
>up wrong. However, while inside the unit I found the AUX inputs!
>:-) So, I hooked up my son's portable CD/radio (with digital
>tuner)... is that cheating? heh... but the Pink Floyd CD meant
>the radio never got used. Sound's SWEET! I love tube amps!
>I also noticed an RCA jack labelled MPX (or MUX?). What's that
>thingamajigger for? multipath rejection?
>Thanks again... now if I can somehow get a fruitfly inside a
>vacuum tube... ;-)
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