Hello all:
I just noticed several pairs for sale of cordless 900 mHz earphones, and I
kept thinking of all those wires and straps in the field and how hard it is
to see a bird singing . . .
Sennheiser makes three models, ranging (in TWEETER) from about $ 130 to $ 270
But all of these would be useless in the field because the transmitter unit
plugs directly into 110 VAC.
But Brookstone had a $ 99 pair that sounded fairly decent, where the
transmitter unit gets 9 to 12 vDC from a battery connector on a cord from a
power unit that plugs into the 110 vAC. Now that unit COULD be modified to
run from a 12 v DC portable battery pack. The range claimed was 200 ft,.
line of sight of course. I believe these transmitters draw about 200 mW, or
about 16 milleamps at 12 V.
In the field, this unit would allow you to park the mics, recorder and
transmitter unit some place handy (on a rock?), then, wearing the
headphones, creep around quietly and get a better look to ID a
sound-maker. My most serious problem in the field is IDing some of the
tropical species, because WHILE the recording is happening, I am tied to
all the "input" stuff with straps and wires. The idea I am having here is
that you could listen at full volume to what your mics are giving your
recorder WHILE moving sideways, hoping to get a better view of the singer.
The headphone freedom would allow you to check the directionality of your
mics, also.
I haven't bought one yet, but thought I'de get some responses to see if
anyone has tried this idea or a modification of it.
my best regards,
Marty Michener
MIST Software Associates PO Box 269, Hollis, NH 03049
EnjoyBirds.com - Software that migrates with you. http://www.EnjoyBirds.com
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