FB. Gary! Glad you got it resolved! 73, Charlie, K4OTV Resolution: Eat more rabbit. Thanks again for the pointer to the 259B being an answer. I now see it will do more than I knew, I didn't know abou
Hi Gary! I'm surprised at wabbits chewing coax! Usually squirrels! Although I would hope the coyote urine would help in any case. The little "tree rats" can be really destructive! 73, Charlie, K4OTV
Well, Carl I plotted your 45-j11 load on a Smith Chart (normalized to 50 ohms) and it's very near the origin on a 1.3:1 VSWR circle. Since you have a relatively short feedline of LMR-400, You should
BTW. Carl I agree completely with Tom that there's no point in having a static-bleed choke on a grounded shunt fed tower! 73, Charlie, K4OTV Since then I've moved the variable capacitor inside the pa
By the way, Carl. it sounds like you might have eliminated a bit of series inductance when you moved the variable capacitor into the enclosure and you may have picked up a bit of shunt-C by moving it
I'd think your Henry would match that just fine WITHOUT the Nye Viking tuner!! 73, Charlie. K4OTV Thanks to all who replied Tom W8JI, your comments on the metallic panel and the static bleed choke ma
Well, you can do all that, Carl But if your series variable capacitor is not maxed out (fully meshed) if you can increase the capacitance enough to get to j0, you would be at 45 +j0 and on a 1.1:1 VS
Well, if I recall correctly, Carl, Carl said his feedline was about 70' of LMR-400, so even at 2 2:1 or 2.5:1 VSWR, the excess losses in 70' of LMR-400 at 1.8 MHz are almost 0, so if he can match it
Well, Carl, you might pick up a littie less shunt C with the vacuum variable, and if it will provide more capacitance, it will probably allow you to get to j0. I guess if you don't have some other ne
Well, that would surely suggest that you should be able to reach j0, by increasing the series capacitance, Carl, unless there's a shunt-C term that has entered the picture after mouning that big vari
Hi, Carl Well, I think that what you are doing with your radials should be OK. I guess I'd rather get them under the asphalt if I could where they wouldn't get torn up or b a trip hazard. BTW I I was
Hi, Carl Well, paying with your load on a Smith Chart, tuning out the -j11 only improved the VSWR from 1.3:1 to 1.1 - not really worth doing! Also, you would need a fairly large inductor to obtain 1
I completely agree with Tom. Carl! I'd leave it alone(for the reasons that I stated previously)! I expect that you would lose more than you would gain by adding an inductor!! "If it ain't broke don't
I don't expect that ANY of those are valid concerns at 1.3:1 VSWR!! Im not concerned by what is measured at the matching unit or a miniscule cable loss; just what is transformed back to the amp and i
And people DRINK this stuff!!?? :) Phosphoric acid is still listed. 73, Larry W6NWS Is it phosphoric acid that gives Coca Cola its peculiar cleaning ability? I no longer can imbibe cola drinks due to
Well, Carl the looses in 70' or even 200' of LMR-400 are so low at 1.8 MHz, even at 2.0:1 or 3.0 :1, if he can match it at the transmitter end of the line, it really doesn't matter! Charlie, K4OTV Th
Well, I agree with all that, Carl. But Carl Braun, was reading "dead-flat" 1:1 at the transmitter end of his cable. I believe he is done!! The antenna Q is what it is! As for "improving his 2:1 VSWR
Wel, I agree with all of that, Roger. I plotted Carl's 45-j11 load on a 50 ohm Smith Chart, and it's right near the origin of the chart on a 1.3:1 VSWR circle. I'd need some more data points at some
Wow!! Sounds like you r "gamma cage" worked out really well, Carl!! The fact that you are running so much more series C now says that you removed a lot of inductive reactance from your gamma section.