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eHam Forums / Elmers / RFI Toroid winding question
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on: November 06, 2012, 02:43:03 PM
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My station is "reasonably" grounded, as in an 8'solid copper ground rod, clamped and soldered to #6 solid copper wire, 6 feet from radio, etc.
Having some RFI issues, affecting usb devices when running legal limit.
So, QUESTION: I have some appropriate mix toroids.
Suppose I fold a cable in half, and wind it through the toroid, effectively then having 2 inductors in series wound in opposite directions. (doing this because cable ends will not fit through center of toroid.)
While I believe this results in a net inductance close to 0, will it still serve as an effective RFI choke?
Constructive Comments Welcomed.
AC2Q
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eHam Forums / Elmers / RE: Filing a USPS Claim Elmer input ??
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on: October 14, 2012, 10:18:57 AM
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I don't know yet if the buyer had the item inspected at the Post Office, but he has retained the original shipping materials.
Photos of the packaging indicate rough handling.
Looks like a lot of it depends on how cooperative the buyer is in taking this back to USPS, etc.
I am not at fault, but I still want to help the buyer receive reimbursement.
quote author=K0RS link=topic=85824.msg627349#msg627349 date=1350232518] Did the postmaster or agent at the buyer's end inspect the amp promptly? If not, you may have problems. Here's how a USPS claim works.
1. Item damaged must be inspected by receiving PO. 2. Shipper files claim (that's you because you purchased the insurance). 3. Shipping PO forwards damage claim to receiving PO. 4 . Receiving PO verifies damage on claim and forwards form to USPS claims service. 5. You receive reimbursement for item.
The key is getting the item examined promptly, including packing materials to verify the damage is actually from shipping. A pitfall is if you didn't pack the item adequately. Pretty much everything rests with the determination of the inspecting agent. If the item arrived at a large PO, it's a good idea to get a ranking employee to inspect the item. They may want to retain the item and packaging on site until the claim shows up from the shipping PO.
Since your item is homebrew, it may be difficult to establish value. Sometimes printed copies of completed sales on eBay are helpful if you can find similar items that reflect the value of your item.
I recently received a damaged key (paddle). I suspected a problem when the box had a rattle, so I unpacked it right in front of the local postmaster. It made it nearly impossible for them to deny the claim. The shipper still had to originate the claim, but it was only bureaucratic formality and the claim was approved with no problem.
The receiving PO should have explained this procedure to your customer when the amp arrived damaged since it was insured.
[/quote]
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eHam Forums / Elmers / Filing a USPS Claim Elmer input ??
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on: October 14, 2012, 08:50:03 AM
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I recently shipped a homebrew 6 m 3-500z amp via insured USPS.
It arrived damaged.
SO, any experience with the pitfalls filing a USPS claim?
Particularly what NOT to do?
AC2Q
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eHam Forums / Antennas and Towers and more / A Tale of 2 antennas 6 meters
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on: September 25, 2012, 05:05:31 PM
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I will be putting up a horizontally polarized six meter antenna.
Something that can be strung between 2 trees.
Debating either an apex down bottom fed delta loop or a dipole.
OF THESE TWO ONLY......which will have the lower T.O. angle/major lobe at at hieght of 30 feet above ground?
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