On 7/21/2014 7:23 PM, K8JHR wrote: Golly, Jim, I was not calling you a cheerleader. The word "predilection" only means "tendency to think favorably of something in particular" so it seemed sorta misp
Gee, this one laid in the weeds for a long time. My post, and Carl's excellent response were a week ago! _______________________________________________ Quite right. Sheesh... I am simply posting a
Hmmm... Gee Bob, now I am worried... there is no needle! ;-) I acknowledge what Carl said about accuracy and impedance mismatch... but as nearly all my antennas present a 1:5 or better SWR and are ma
You could study N8LP's web page. Click on the LP100A link. It's worth it to me if it lets me run closer to legal limit in a contest, or when calling DX. 1.5:1 SWR causes significant error in the powe
Hello Bob, What if the needle moves backwards instead? 73, Bruce WA8TNC == Bob McGraw - K4TAX wrote: If it moves up scale off of 0 you have WATTS. If it moves further up scale you have MORE WATTS. Th
For me and my station in every day operation the Daiwa CN-801HP serves me well. To add to that if you wish, a Bird 43P {clean but used late model $375} add a 250 watt HF slug {250H @ $175 new} and ad
One would presume to have the meter polarity reversed. {is this a trick question?} In fact I have observed a watt meter in line between the antenna and a dummy load. The meter actually indicated a fe
Bob, Add those numbers together and tell me what you get. Don't take your shoes off. :) I get $805. An it only goes to 30 MHz. And precision is 5% of full scale. I shopped at hamfests and found a Bir
Gee... Sorta condescending and demeaning. And not particularly helpful. I often forget ham radio is only for experts with careers in electrical engineering - the rest of us hobbyists are merely toler
The LP-100A has two connections to the sensor. One is for current and one is for voltage. Power is simply the product of voltage times current. So for any load impedance, power will always be calcula
Jim et al; I can agree that the bare Bird 43 at a hamfest is about a $200 instrument. A legit 43P, not with a add on board version, is a bit more expensive. The slug prices I quoted are new and not o
Some care has to be taken when interpreting the LP-100A's power readings. On my version it indicates Pfwd when the "F+R" mode is selected, and Pfwd-Pref when the "Net" mode is selected. I got caught
Carl is very correct on these points. With typical meters that are only voltage sensing, from my experience, power is best measured into a dummy load of known impedance. As to the station operation,
My CN801 is an older production unit, for which the mod does not work. Adding diode(s) to reduce the lamp brightness is fine if the lamps (or their current limit resistor(s) haven't already burned ou
Most less expensive meters only measure voltage. They calculate power as Voltage squared divided by 50. They always assume the load is a pure 50 ohms. But with a 1.5 swr, you could have a 75 ohm load
In James' defense, I would like to say that he is sincerely trying to learn this stuff, and without a solid technical background, it is not as easy as some of you might think. Just reading the ARRL H
Things are seldom as simple as they at first appear! The Model 1225 - like all the SWR meters I've ever built or owned - does _not_ simply indicate power by measuring line voltage (V) and computing V
Author: "R. Eric Sluder-W9WLW via TenTec" <tentec@contesting.com>
Date: Tue, 22 Jul 2014 17:35:43 -0700
Jim: I share the following saying that I read on a church sign one day while driving down a road as it seems fitting after reading your message. "Be careful when judging someone else just because the