Fastest easiest windscreen to build is to go to a fabric store. I
prefer using material that stretches in all directions such as T-
shirt material. I also found this with a camo pattern. Cut a circle
two inches larger than your dish and then fold the edge and sew. Then
thread elastic cord (also from the fabric store) through the folded
edge. Tie off the end. Cut hole in the middle if needed. the screen
then is taught over the whole dish. I use one very lite material and
one of fake fur. both combined are good to 40 mph which I have only
had to resort to on a few occations.
On the hum. Did you test this indoors near a dimmer switch? Do you
have the same performance outside? Is the performance the same with
the recorder in a metal coffee can? It sounds like the problem may be
with the wire leads you soldered to the outside being to long.
Have a good trip and good luck.
--- In "deer2me22002" <>
wrote:
> Hello again,
> Things are finally taking shape, I have built a
homemade
> parabolic mic using a 21" Telinga Dish and a ECM T-145 mic. With
this
> i am planning on using an MZ-R30 minidisc recorder which i
purchased
> from E-bay. I wasn't to delighted when i received the MZ-R30, first
> problem I found was that the rechargable LIP-12(h) was dead as
could
> be, then i found that the recorder would not charge the said
battery,
> another option was to use regular AA battries, but i did not
receive
> a battery case that would snap onto the sie of the recorder and
none
> of this stuff could be purchased here in Canada. Therefore i had a
> recorder that was not portable. I have since gotten around this
> problem where as my son made me up some external power packs from 2
> AA battries , 2 wires were soldered to the 2 contacts on the side
of
> the recorder where the battery case wuld go, and to wires were
> solderd to the batteries, bullet clips were joined in the middle of
> this for easy battery change. So now i have my recorder portable.
> Last night i built the homemade parabolic and tested outside, i
came
> across a couple small problems. First i was getting what sounded
like
> feed back, I was thinking that this was because of where my
recorder
> was only about 2 feet from my dish, so I added a ten foot extension
> to move further from the dish. This has gotten rid of the feedback
> sound but now I am getting a different sound which is hard to
> explain, it is like hiss or low hum, i was calling it the sound of
> silence, I am not sure. I was recording in Mono/Manual Recording
with
> my rec level nearly max, I was wondering if it has anything to do
> with my recording level, i read some where that between 5 and 6 was
a
> good setting for this recorder. Could someone please tell me what
> would be a good level. One last small thing, what would be
something
> that i could used to cover my Telinga dish for wind protection and
> what could i use for a small mic which i have (that is very very
> sensative) for wind protection, I have no time to order anything
for
> these because I am heading out on my first recording trip tommorrow
> and will be gone for up to three weeks?
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