Guys, If you want to know what your S-meter really reads build the attenuator in the ARRL handbook and inject a fixed signal. I did this when my quad was showing much too much F/B and gain. This tabl
Well, hopefully you've checked the calibration of your attenuator! However I would also offer that you should buy Yaesu then you wouldnt have these troubles! 73, Tyler K3MM -- FAQ on WWW: http://www.
Brian and you guys, Here is my take on the S meter stuff.... Assumption that Brians pad is db as power ratio in accordance with the usual db=10log(P2/P1) and applying 10dbP2/P1=20dbV2/V1 cause the S
Bob writes about K3KO's measurement of a TS450 S meter: In the QST review the 450's S meter is reported to read S1 for 1.7uv of signal and S9 for 31uv. If that's 48db I'll eat my harness. Regards, Pe
which is pretty darn close to 48db or 6db/S unit. As to what S9 means on K3KO meter, he'll have to measure it to find out. My point. If you use a voltmeter on the AGC line (your S meter will do if i
The QST review of the TS450 measured S1=1.7uv, S9=31uv. Reviewing the basic math chapter of the Handbook: db = 20 log (E1/E0) and where impedance is constant, the power difference is: db = 10 log (E1
Oh, oh, here we go again. When I was in engineering school, the definition of dB was that it is 10 times the log(base 10) of the power ratio. For voltage change ratio in the circuit, it is 20 times t
You're correct, of course. In this instance, a given level was used as a reference, and an attenuator was used to drop the signal to the various readings. Voltage or power doesn't matter, because a 1
Jim You are correct. a db is a db ..... -a sheepish bob wb4mnf -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQU