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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:	1750945
Date Placed:	11/27/25
Name:	lothar baier
Phone Number:	email only
Callsign:	KG5JCC
Category:	AMPVHF
Heading:	100MHz-6000MHz LNA +22dBm P1dB
Ad Message:	This LNA uses the qorvo QPL9547 which offers superior noise figure , gain and P1dB . Due to its wide bandwidth it makes a great lab amplifier to be used with spectrum analyzers but also works great for ham radio use . The unit is small enough to mount directly to a coax relay using a SMA barrel avoiding addiotional cable losses . A build in LDO allows operation from 6 up to 30V Since the 9547 is primarily designed for use in cellular infrastructure the noise figure sweetspot is in between 700MHz and 2700MHz , at 1.3GHz W2HRO measured 0.22dB NF , at 2.3GHz the typ NF is around 0.5dB , at 433MHz i measured 0.12dB using a 346A and N8973A at 144MHz NF increases to 0.35dB. The sales price is $179

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:	216.73.216.61
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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