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AM 1710 Antioch is an Old-time Radio
Shows
station located in Antioch, IL, a mile from the
Wisconsin border and 20
miles inland from Lake Michigan.
The AM transmitter is a micro-power
part15 AM
RangeMaster1000 transmitter. Our house is in the
middle of town where
the houses are densly spaced. Range is about 1/2 mile
covering hundreds
of households. Since the below satellite picture was
taken, other
neighborhoods now exist to the west.

Tested with a portable radio on walks
and car
radio on drives
Green 1/8 Mile - Rock solid
Yellow 1/4 Mile - Solid
Blue 1/2 Mile - Some noise, still easy to listen to
Purple 3/4 Mile - More noise, positioning and a good
antenna help
Red 1 Mile - Usually can still understand but not as
enjoyable
There are nearly 18,000 shows of which
about
11,000 are automatically scheduled. And there are lots
of music samples
to fill time between shows. The Library of shows and
music occupies 147 GB in a Late 2010 Mac Mini. The Mac
also has the job of scheduling all shows with in-house
custom software
written in REALStudio, playing the shows and music in
iTunes controlled
via Applescript.
Library
Selection:
Collections are merged from various
sources--comparing and making judgements and even
fixing audio, dates
and spellings where I can. Audio quality is not always
ideal but
sometimes the content is so good it demands inclusion
anyway. This is
particularly true with The Whistler and Quiet Please
episodes. I'd
prefer hearing surface noise to a loss of fidelity and
I'd sometimes
prefer a more complete show if the audio is a little
worse and
sometimes I'll even merge two files into one. Large
collections take
years to listen to so this is an ongoing process. But
I spot check
everything by listening to the first 30 seconds,
sampling several
places in the middle and listening to the end. I
sometimes have to
remove long annoying 30 second to 2 minute trailing
silence. I've often
done pitch corrections and careful noise reduction
where I can to
remove clicks and narrowband noise such as hum using
notch filters and
low and high cut filters.
It's certainly possible to simply
purchase a
loaded hard drive or dozens of DVDs on eBay of mp3 OTR
shows for
various prices from $90 for 10,000 to $1,000 for up to
40,000 shows but
I can't think of any case where this results in my
idea of quality,
though I haven't tried the latter. Even from the best
"HQ" sources
there can be problems so having more than one HQ
source is an
advantage. From the more commonly available mp3s
available from
probably hundreds of vendors, I've heard the worst
examples of very bad
decisions at the digital stage such as encoding stereo
at a mono bit
rate like 32Kbps stereo 22KHz sampling. I've heard
noise reduction
techniques that make things sound underwater. I've
heard AOL sign-in
and Windows desktop sounds (just lovely and
embarrassing to hear played
on a Mac). I've heard mp3 encoding glitches that sound
like hiccups.
I've heard large amounts of leading and trailing
silence which is like
counting rings on a tree as I hear the different hiss
sounds of many
generations of tape recordings. I've encountered lots
of missing ID3
tags. I've encountered duplicate files just with
different file names
claiming to be and episode they're not. I've heard
audio drop-outs
consistently every few seconds for an entire 900-show
Suspense
collection.
Some good sources have already
disappeared. One
source for which I've purchased several hundred shows
is no longer
in business and I can't find those shows at that
quality anywhere
anymore. Good thing I got as much as I did when I did
since there's no
telling how long before we see it again. The
Suspense collection available at OTRNow
is very close to
my collecting standards with the exception of a bit of
underwater noise
processing on some episodes. OTRNow is a good starting
point for
any collector since it is relatively cheap and quality
can be very
excellent. Jerry
Haendiges's collection is also an excellent
source for hundreds of
shows I've received for high quality. He has some rare
ones and he
tends to be close to the source. But no one is
perfect. At least
when what I get is already digital high-fidelity, I
can work with it to
improve it. There are others but you're on your own
from here. Please
don't ask me more about my sources.
The result is after years of collecting,
the
total size of the collection has only grown modestly
but the quality is
uncommon. Thousands of shows are now digitized
directly from Electronic
Transcriptions or master reels which over the past few
years has become
an investment of thousands of dollars and uncountable
time.
Scheduling
and
Automation:
Scheduling of shows is an automated
process where
shows are selected by the following priority:
1. Shows that match today's date that
have not
played recently
2. Shows that match today's date regardless of when
they last played
3. Shows that match yesterday's date that haven't
played recently
4. Shows that match the day before yesterday's date
that haven't played
recently
5. Randomly selected shows that haven't played
recently.
Where recently = a few months to a few
years
depending on category. In the case of Comedy shows,
this can be 2 to 3
years whereas with Spy Stories it can be just a couple
months. Serials
just rotate.
The dates are read as a date object and
audio is
concatenated to present an introduction of original
play date including
the day of the week. Station IDs and an "Up Next" file
are compiled
along with music fill.
Since we're matching today's date and
since most
of you don't stay awake listening for 24 hours, there
are replays of
several sub-genre segments across the day so you don't
have to worry
about missing much.
When there's room at the end of a
segment, we
fill with public domain classical music from musopen.com.
Audio Processing
The source material is varied in quality
so in
audio processing I tried to make the best compromise.
First the tracks
are virtually normalized with iTunes Sound Check
function. iTunes plays
the audio which uses Volume Logic to lightly process
(AGC, 5-band
compression, and limiting) the audio in realtime.
Nicecast digitally
captures the audio that iTunes is playing. I use a
couple Apple Audio
Units and VST effects in Nicecast to roll off the
extreme highs and
lows (such as rumble) not useful or desirable for AM
or low sample-rate
streaming.
From there it goes to two places: 1.
Nicecast
encodes the audio using LAME and passes it on to a
shoutcast server on
a major internet trunk at fast-serv.com which serves
the internet
streams. 2. Nicecast runs a parallel audio chain which
processes the
audio more aggressively with audio units before
sending it out of USB
audio breakout box, through an impedence converter,
and then
to the transmitter on the roof.
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