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Does anyone have suggestions on how to tune the SWR on a Gizmotchy?
I've got a very nice 1.3:1 on CH1 but it jumps up to around 2.1:1 on CH 40. Since I spend all my time on 36 to 40+, I'd rather have the low point tuned to CH40 not to CH1.
I've jacked around with the Gamma length a bit, and...
I'm not interested in any radio with a band selector and a 40 channel knob.
If they are making a 10/12 meter radio, then make it the way the hams would want to use it. This thing doesn't look much better than my JCPENNEY 6247 40 CH SSB that I got in about 1980. Surely they can give me...
I am aware that Jogunn publishes garbage for the gain and performance numbers. However I am interested in how their V Series antenna works.
What do they mean when they say this antenna is dual polarity or circular polarity? Can it really talk to someone is transmitting horizontal and someone...
I'm thinking of putting up a 3 element beam on a Rohn 25 type tower.
What is the rule of thumb for how much of the mast pole should stick out of the top of the tower? Should it be kept as short as possible, or is there any problem with having the pole 10ft+ above the top of the tower? I...
you guys are putting a damper on my plan to put 2 bags of sackcrete in a small hole and call it a day. Isn't the house mount going to take 90% of the wind force, and very little be transferred to the ground?
I'm going to be putting up a 30ft Rohn tower. Antenna will be a 3 element.
I'm going to attach it about 20 / 25ft up to the gable of the house.
Question, how much of a concrete base do I need to put this thing in? I see people quoting a cubic yard of concrete, but that seems to be for free...
I just got a used 25G tower. 2 - 10ft sections, plus the torpedo top section.
Currently it has no provisions for mounting a rotor. Can someone point recommendations/instructions for installing a rotor to turn a small load beam. (no more than 9 ft boom). For something this small is a...
I'll be moving soon and am thinking about what antenna to put up at the new shack.
I'll have access to a 40 ft tower.
I can put back up my old 5/8w Maco or was thinking of going with something like the Vector 4000. I have no complaints with the Maco, but I'm not sure what I'm missing out in...
Hi Guys, I have an update to this problem. I found out that D16 was shorted, 3 tubes were bad, and 3 resistors (under the tube chassis were blown).
I replaced all 4 tubes. I have replaced the D16 diode as well as performed the AL811 mod from w8ji.com consisting of removing the resistors and...
Like some others I think I might be victim of an amp damaged in shipment. (I'd like to see the best in people and hope the guy wouldn't have sold me a bad amp)
Anyway here is my issue:
I've replaced all 4 tubes with a never used, matched set.
At Standby, switch in HV, it reads 1700 volts...
To close the loop on this.... I bought 50ft of new LMR-400 to fix the SWR problem, only to find, with the new Coax the SWR was exactly the same as it was with the 22 year old stuff.
The problem was that one of that clamps that connected the coax feed to the "Hoop" Ring at the bottom of the...
Thanks for the ideas. Last evening we got some rain, and I noticed that the SWR went DOWN during the rain. Now this morning, its back up again. Does this give us any additional clues to where the problem might be? Coax the most likely culprit?? No visible damage to the antenna itself...
I fired up my radio for the first time in a year or two and I noticed that on both the radio's built in power meter, as well as on my external meter, my power output is only about half of what it should be.
I then checked the SWR and noticed it to be way up from what I remember it being back in...
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