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Or get a step attenuator such as "The Attenuator Kit #13" that Kees is selling for $15+$4: ? ?https://www.qsl.net/k5bcq/Kits/Kits.html and drive it from that long forgotten 1W qrp transmitter down

Gary - how do you log this QSO? You xmit/receive in Austin, the other side receives in UT but xmits in Chicago? 73 Kevin K5KDT

Brad somewhere on the Norcal QRP website is a little circuit called S9/S1 signal source.? when I did the calculation I get S9 and S4 ... anyway its a one transistor crystal oscillator that makes 2

I like telling them they are S 8.367...? -- 72 and God bless KD4EPG

Websdr is useful for monitoring but also check out OpenWebSDR , an open-sourced and well documented I/Q web server and standard browser receiver. Many live receiver server sites around the

I have used a short piece of stainless steel whip antenna ground down to a tapered needle to open those plated through holes. 3 - 4 inches long with about 1 inch tapered to a point. Best

S9 is -73dBm into the antenna port of your receiver (50uV into 50 ohms), and it's 6dB per S unit. So S1 is -73dBm - (9-1)*6dB = -121dBm into the antenna port. Of course, most receivers just flip up a

copy of photo i received is attached. Thanks to VU2ABS.

Listening to a rig

Yes, they may be useful for many checks. Maybe a more practical way of checking the TX audio is to transmit into a dummy load and listening to a right without any antenna connected. I trust more on

680nH wrote:

Stainless steel wire won't catch solder.

I use wooden toothpicks to open holes. With the soldering iron.? It is not damaging the holes. Rob PA0RBL

What is the actual value uH of the two SMD parts you are using here? Thank you Bob N1ETS

I made a smeter circuit using a lm358 and went through the process of configuring the firmware using the s-meter assistance tool. This got me thinking that if S9 = 50uV at the 50ohm coax connection,

That's a neat trick too thanks.? I guess that could be way cheaper than desoldering braid.? I only recently learned that flux is on soldering braid as part of what makes that work. (I had done a lot

Thanks Gary, Actually the component is covering the area! I have some ceramic tipped screwdrivers for ferrite slug adjust. They are sharp and I used one to gently scrape away the resist

They are from a sample book. Marking is S+M which I understand is TDK. They are shielded and have a DC resistance of less than 2 Ohms. 1210 size if I remember right. Raj

Excellent picture - can you state the part number and mfr of the SMD inductors you are using? Thanks, 73 Paul

Dave, Use a wick. I normally strip some audio shielded wire or very thin coax like rg174 and dip it in some flux and sponge off the solder. Then clean off the flux. Raj