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In an effort to reduce spam and the spread of viruses, we are now providing this form for you to contact a person that has placed an ad on QTH.COM. After submitting this form, an e-mail will be generated and sent to BOTH you and the person that placed the ad. The e-mail will contain a copy of the ad, plus your e-mail information and your comments.

NOTE -- BEFORE YOU RESPOND:

1. Please Read the Safe Trading Tips article from KA9FOX.
   Link opens up a new window, so you can come back to this ad later
2. Use the Feedback Forums to see if the person you are about to deal with has any good or bad feedback from previous dealings.
   Link opens up a new window, so you can come back to this ad later

You are responding to the following ad:

Ad Number:	1744860
Date Placed:	10/01/25
Name:	VLADIMIR DVORKIN
Phone Number:	EMAIL ONLY
Callsign:	KB9OLM
Category:	MISC
Heading:	For sale: BRUSH Piezoelectric headphones
Ad Message:	. For Sale Piezoelectric (aka crystal) headphones manufactured by Brush Clevite Factory. Perect condition. . Extremely power sensitive (~120dB/mW, which is necessary for crystal radios that are powered entirely by the radio waves they receive. . Piezoelectric headphones are electrically compatible with modern audio signal sources. . Some people use BRUSH headphones to make crystal microphones. . Asking $25 plus shipping, continental US only. Payment by USPS Money order or by Personal Check. My home address is good in QRZ. . Thanks for looking, KB9OLM, SAN FRANCISCO EAST BAY AREA.

Your Response to this Ad:

Due to the amount of non-ham scammers trying to respond to the ads, I am now asking a simple question that ham operators should easily be able to answer, but scammers may not know the answer: What is the number that hams use to represent the phrase "Best Regards"? This number is typically transmitted by hams at the end of a QSO.
Best Regards:
Your Name:
Your Callsign:	(Enter NONE if you have no call)
Your E-mail Address:
Your E-mail Address Again:
Your IP Address:	216.73.216.213
Please forget all information you have automatically stored about me in cookies.
Your message:
BUY / SELL / TRADE SAFELY! I agree that I have read KA9FOX's Safe Trading Tips HERE (link opens in new tab).

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