[RFI] Ultrasonic Dish

[dalej]

Or build your own.  Home Depot and buy some roofing flashing, or sheet copper from a salvage yard would be nice, I have some here that I use for ground straps.  Cut out a circle then take a pie slice and bring the open ends together and pop rivet.  You can make it as big and as deep as you like.  You could solder too I suppose.  Don't forget the hole in the middle for the mike or pickup device.  Let your imagination run amok.

Dale, k9vuj



On 02, Jan 2013, at 4:29, "Roger (K8RI)" <k8ri at rogerhalstead.com> wrote:

> On 1/1/2013 10:49 PM, rick darwicki wrote:
>> I'm considering building the W1TRC arc detector from April 2006 QST.
>> Any ideas on a cheap source for the parabolic dish?
>> Worth the effort?
> 
> Virtually anything that is roughly the desired shape will word, be it plastic or metal:  Cook ware, kids snow saucers, etc. Just go into Lowe's, Home Depot, Sears, Koh'ls, or hard ware stores and look around. Let your imagination be your guide.
> 
> 73
> 
> Roger (K8RI)
> 
>> 
>> 
>> Thanks
>> 
>> 
>> Rick, N6PE
>> ==================================
>>  Talk is cheap... except when Congress does it.
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