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Telamon wrote:
In article , Dave wrote: Telamon wrote: In article , Dave wrote: RHF wrote: Dave, IIRC a good Amateur Radio 1/4 WL Vertical-Up-Leg by 1/4 WL Horizontal-Out-Arm {Inverted "L" Antenna requires very little Tuning and performs very well near and far on the HF Band that it is 'cut' to use on. Using a direct-connect or 1:1 UnUn at the Feed-Point * Half-Wave Inverted "L" Antenna : 1/4 WL + 1/4 WL Where-as the more common Shortwave Listener (SWL) type of {Random Wire} Inverted "L" Antenna is un-equal and usually has a shorter Vertical-Up-Leg and a longer Horizontal-Out-Arm of at least 1V-to-2H and often 1V-to-3H or more. Using a 9:1 Matching Transformer and Ground Rod at the Feed-Point which is at the base of the Vertical-Up-Leg. "Random" implies otherwise. Instead of a 9:1 UnUn, imagine one of these at the feed point: http://www.mfjenterprises.com/Produc...ductid=MFJ-927 I enjoy playing with these kind of things. So I got a license to transmit. Some call that "elitist", I call it self-indulgent. I would just call it following your interests. Remote tuners are the right way to do things. Much better than a tuner in the shack. A tuner in the shack matches the radio to the transmission line. There is still a mismatch at the feedpoint. Exactly. Then the transmit energy ends up heating the coax to the antenna and components in the tuner. sarcasm on As a bonus you get RFI in the shack. Another bonus is high voltage at points in the coax to the antenna where you could have a flashover condition. Sarcasm off A tuner at the antenna is a much better setup. You are doing things right. Most HAM's don't. When Mr. Smith imagines doing this he does it wrong. He's right, too. My sloper is resonant but I still use a tuner to protect the transceiver. I was going to use the Remote Autotuner but don't need it. I get a decent match even on 160. |
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