Re: [Elecraft] W2 Directional Couplers
The 200W version has a low range that can measure power down to 0.1 watt. The minimum reading on the 2000W version is 1 watt. On 5 Jan 2015 10:12, David Ferrington, M0XDF wrote: I would have thought there is some difference, otherwise why go to the trouble of making two different models? -73 de M0XDF On 4 Jan 2015, at 20:01, Michael Eberle wrote: Dan, With the 2000 watt coupler, you can still select either the 20 watt, 200 watt, or 2000 watt scales. I doubt there would be any difference in resolution by using the 2000 watt coupler with the W2 set for the 200 watt scale. The manual specifies accuracy of +/- 0.5 dB typical for both sensors. Mike KI0HA On 1/3/2015 09:31, kg5eju wrote: 100 Watt station with 2 antenna. Need a second coupler of the W2. First one is 200 watt, and thinking of adding a 2000 watt coupler for the second (future proofing for possible linear). But, wondering if there is some accuracy/performance trade-off using a 2000 watt coupler on a 100 watt station? Thank you for your thoughts. 73 - Dan -- 73, Vic, 4X6GP/K2VCO Rehovot, Israel http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] W2 Directional Couplers
I would have thought there is some difference, otherwise why go to the trouble of making two different models? -73 de M0XDF > On 4 Jan 2015, at 20:01, Michael Eberle wrote: > > Dan, > > With the 2000 watt coupler, you can still select either the 20 watt, 200 > watt, or 2000 watt scales. I doubt there would be any difference in > resolution by using the 2000 watt coupler with the W2 set for the 200 watt > scale. The manual specifies accuracy of +/- 0.5 dB typical for both sensors. > > Mike > KI0HA > >> On 1/3/2015 09:31, kg5eju wrote: >> 100 Watt station with 2 antenna. Need a second coupler of the W2. First >> one is 200 watt, and thinking of adding a 2000 watt coupler for the second >> (future proofing for possible linear). But, wondering if there is some >> accuracy/performance trade-off using a 2000 watt coupler on a 100 watt >> station? >> >> Thank you for your thoughts. >> >> 73 - Dan > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to m0...@alphadene.co.uk __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] W2 Directional Couplers
Dan, With the 2000 watt coupler, you can still select either the 20 watt, 200 watt, or 2000 watt scales. I doubt there would be any difference in resolution by using the 2000 watt coupler with the W2 set for the 200 watt scale. The manual specifies accuracy of +/- 0.5 dB typical for both sensors. Mike KI0HA On 1/3/2015 09:31, kg5eju wrote: 100 Watt station with 2 antenna. Need a second coupler of the W2. First one is 200 watt, and thinking of adding a 2000 watt coupler for the second (future proofing for possible linear). But, wondering if there is some accuracy/performance trade-off using a 2000 watt coupler on a 100 watt station? Thank you for your thoughts. 73 - Dan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] W2 Directional Couplers
On 1/3/2015 7:31 AM, kg5eju wrote: > But, wondering if there is some accuracy/performance trade-off using a 2000 > watt coupler on a 100 watt station? The FCC's standard for transmitter metering is the minimum normal reading cannot be less than 20% of the full scale reading for a linear-scale instrument or 33% for a logarithmic-scale instrument. For a digital readout, the readout of the device must include at least three digits and must indicate the value of the parameter being read to an accuracy of 2%. See FCC Rules Section 73.1215 for other details. 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 >From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
