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...my version of the QRSS board for 30M. Nice quick build and after a little bit of fiddling with the gimmick capacitor I have a nice 5Hz shift as seen in Argo while transmitting through a dummy

Update: To clarify, I need to "calibrate" ARGO in order to understand where my signal is being transmitted. Any pointers will be appreciated! 73 Brad

Hi Brad, The easiest : tune to WW-V on 10 MHz and 15MHz. You should have a sharp carrier and will be able to notice your VFO error on two points. If you are not able to receive WW-V or WW-H, there is

Sage advice Yan, and I will investigate. I did stumble upon the WSPR info and it started my thought process. Thank you for the PowerSDR article...I will glean what I can and get this puppy on the

Just a reminder that the Iowa High Altitude Balloon (iHAB) project will launch their second balloon with QRP beacon on Saturday. This launch is sponsored by QRP ARCI. The launch is scheduled for

With the rain coming up the East Coast I broke out my QRSS Beacon kit and got it started. On step 4 of the build I see a signal on the scope but can't find it on the rx or counter. Seem to have a

Got the kit running on the bench still on 12 wpm with 36 ohm dummy load I am getting 5.08V p to p output on the scope. This is somewhere around 250 mw and is set somewhat below max output as max

Hi Paul Congrats on finishing the kit. Yes, the transistor can get a bit hot when tuned for maximum output and it is best to turn the trimmer pot a bit back towards the "cold" end (ground) to lower

Hans Thanks for your comments. The beacon has been running for several days now and the final seems ok temp wise with the output at 5.08V. I used this table of RF volts into 50

Hello Seems that there is some confusion regarding how to measure RF power. There are several voltage measurement methods, including: * Average voltage * RMS voltage * Peak volts *

Guys, FWIW the formula for calculating RF power into a 50 ohm load from the peak to peak voltage observed on a scope is :- Power = 2.5 x (Peak to peak voltage squared) milliwatts So if you have a

OK on the power formula and the P-P vs. Peak Volts. Will work on antenna connection and move it to the slow speed. Paul K3PG

Hi Paul As others already noted, the table is peak voltage, not peak-to-peak. That's where the missing division by 2 comes from. Also bear in mind that table is for 50 ohm load. You were using 36

Beacon was on the air last night with 3 sec dots on about 10.14070. Using the CW mode (upper side) on a FT-1000 to read the Freq. Keyer seems stable and is reverting to a 12 wpm ID every 10 min or

Hi. Having few spare time in october I just finished assembling the beacon kit. Everything seems running ok but I am not happy with the 2N7000 bias setting. Running the beacon at 5-6V, even with the

Hi all, Just managed to get a 30m kit built. Just testing into a dummy load right now. When apply power the signal is spread over maybe 10Hz initially (wide band) after couple seconds it calms down

Hi Dom I wonder if that is AGC action? It'll be a massive signal into your receiver and probably the AGC either in the receiver, or in Argo, will take a little time to adjust to it. That's my

Thanks Hans... probably explains it. 72 Dom M1KTA

Does anyone have an easy method of matching your antenna to the 30m QRSS beacon? My SWR meter is not sensitive enough to work with the beacon kit and my QRO rig does not do 30m, but I do have a 30m

Neil G7AQK These URLs might help: <http://sites.google.com/site/arvidevans/bare_minimum_z-bridge> <http://sites.google.com/site/arvidevans/antennacurrentindicators> Arv K7HKL