OK so I am trying to measure around 5 Watts or so on the W2's 20 Watt scale. The spec's for the W2 directional couplers are listed at 0.5 dB accuracy. Is this anywhere or just at full scale? How much could it be off at only 25% of full scale? Trying to decide if the 2.8 Watts I am reading at 440 MHz on high power is too low with a spec of 5 Watts output! If it is I can send it back to the place of purchase to be checked and exchanged if necessary. There seems to be no problem on the 2 Meter band at only 25 % of scale (5 Watts) reading....just on 440. Michael n2zdb In a message dated 07/30/2017 12:36:49 P.M. Eastern Daylight Time, [email protected] writes:
The accuracy of a Bird Model 43 is +/- 5% of full scale. The meter scale is not linear and produces the best read accuracy in the bottom portion of the meter's scale. There are numerous watt meters on the market today that are more accurate. FWIW 73! Ken Kopp - K0PP ---------------------------------------------------------------------------- -------------------------- On Sun, Jul 30, 2017 at 9:23 AM, Michael Walker <[email protected]> wrote: The only way to get the answer you wish is to compare it to a bench standard like a bird watt meter. Beyond that you are just guessing. Sorry Mike va3mw On Sun, Jul 30, 2017 at 11:18 AM, Michael via Elecraft < [email protected]> wrote: > Measurement is in analog mode.....should have made that clear or not even > mentioned a digital radio! > > Michael ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
