A Better Quality AM FM Receiver [Basics]

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From: Jasen Betts on 30 Mar 2010 03:16

On 2010-03-30, lockmaven <klik4me(a)mail.com> wrote:
> Unfortunately, an external antenna is not an option.
>

how do you get TV?

--- news://freenews.netfront.net/ - complaints: news(a)netfront.net ---

From: lockmaven on 30 Mar 2010 07:32

The antenna is a great idea of course, but I am still looking for a
quality receiver to hook it up to.

---------------------------------------

> > On Mar 29, 6:02 pm, Tim Wescott <t...(a)seemywebsite.now> wrote:
>
> > Can you hang an antenna out the window? It may make a world of
> > difference.
>
> > --
>
> > > Tim Wescott
> > > Control system and signal processing consultingwww.wescottdesign.com-Hide quoted text -

From: Michael A. Terrell on 30 Mar 2010 10:57

Jasen Betts wrote:
>
> On 2010-03-30, lockmaven <klik4me(a)mail.com> wrote:
> > Unfortunately, an external antenna is not an option.
> >
>
> how do you get TV?

He picks them up at a bar. ;-)

--
Lead free solder is Belgium's version of 'Hold my beer and watch this!'

From: default on 30 Mar 2010 20:44

On Mon, 29 Mar 2010 14:56:57 -0700 (PDT), lockmaven <klik4me(a)mail.com>
wrote:

>Hi Group,
>
>The apartment I live in has thick concrete walls, floor, and ceiling.
>
>Over the years I've tried several different receivers but all to no
>avail.
>
>I'd like to buy a better quality AM FM receiver, and would appreciate
>
>any and all recommendations of particular brands and models which
>
>are known to perform well under adverse conditions.
>
>thanks for your help.

Get a car radio or tuner . . .
Great! I say, - easiest way to get stereo FM into my shop (metal
building) using low loss coax aimed at the automobile market (12' -
how'd you think those stretched limos do it?) plus, after-market car
radios are built with sensitivity in mind, and not terribly expensive.

Concrete is not necessarily a signal stop, the amount of moisture in
it may be. If the concrete is concrete blocks with a modicum of
moisture protection, no problem. Add real concrete with reinforcement
bar anchored in mother earth and kept wet and you have a problem.

If you already have and love a receiver (one presumes the FM is the
real problem, AM should go through concrete)_you need to get outside
the building. Laws, lease agreements, rental agreements, etc. be
damned. A simple folded dipole made from 300 ohm twin lead should be
enough (search for it - takes roughly 4' of TL plus lead-in to the
receiver). Throw it out the window.

Still not happy?

Read up on multi path (FM) and which directions the stations you want
are in.

Then it gets more hinky . . . ditto HDTV. Then a shield that blocks
an interfering signal (or multi path) may reduce average signal
strength, yet improve reception. (read about multi path to understand
how that works). All to do with geography and location and signal
reflectors (buildings, water towers, mountains, hills, etc.)

And last but not least . . . a lot of FM receivers and tuners with
outdoor or "compromised" antenna inputs (say from walking across a rug
on a dry day and touching the antenna input) may be faulty. The
junction field effect transistor is susceptible to static electricity.

Mainly outdoor antennas. from my repair experience. JFETS are great
for FM front ends, but not bullet proof. The problem is, you need a
good voltmeter and experience to troubleshoot them.

Generally you hear about, or have a customer who used to get WXXX but
can't any more (or not since that big thunder storm last year . . .)
--

From: John Fields on 31 Mar 2010 08:27

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