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No, shielded tubes are usually glass, with a metal shield that slips over them. Rich

Steel tubes: I Was looking for the venerable 6L6, but didn't have time to find a picture. Rich

You are always better off with a lower SWR. Will you be able to tell any difference on the other end, if your SWR is 1.5:1, instead of 1:1. No. Is it worth the trouble to bring it down from 1.5:1. On 11 meters, probably not. On 80 meters, it might give you a little more bandwidth, but that is...

Thanks, Chief. I missed those threads. Guess I should have used the search first. I've been thinking of building a 40 meter Moxon, just for grins and kick. I'll let you know how it turns out. Rich

No, the power is not cleaner, or dirtier, because of SWR (General statement, but usually true). The meter is not playing tricks, but is reading all of the forward power that goes through it. If it starts out dirty, it will remain dirty. If it starts out clean and your amp is properly designed...

No, the reflected power from the antenna is not adding to the forward meter reading, until it re-reflects from the output of the final PA. At that point, it goes back through the meter in the forward mode and adds to the reading, then on to the antenna to be radiated, or reflected again. See...

Moxon Antenna Project I've been doing some research on this antenna and it looks promising. I use wire antennas at home, exclusively, because I enjoy trying different things (and I'm cheap). Anyone here make one of these? Any comments? Rich

Think of it this way: The transistors are having to work harder to push their rated power against the reflected power. This requires more current (amps). More current---More heat. This is why most good PA's have a fold-back circuit that reduces their power output, if the SWR gets too high. Rich

Let's say you are using 100 feet of old RG-8 coax and that it has a line loss of 3 db for that 100 feet at your transmit frequency. Place your SWR meter at the antenna end of the coax. Your transmitter is putting out 100 Watts, into a perfectly matched (1:1) antenna. Your reflected power is 0%...

I wish that people would pay attention. Reflected power, is not all lost power. Rich

This is called a weep hole and all antennas should have them. Rich

An interesting "fact" about the 10 codes: Originally, they were just single number codes. The 10 was added because, radio operators have a tendency to "quick-key", thus cutting of the first syllable of their sentence. By adding the 10, the only thing lost was the 10 and you already knew what...

A little over a month after the Federal Communications Commission released the Report and Order (R&O) in the so-called "Omnibus" Amateur Radio proceeding, WT Docket 04-140 (FCC 06-149) to the public, a revised version appeared November 15 in the Federal Register <Report & Order>. The changes...

A little over a month after the Federal Communications Commission released the Report and Order (R&O) in the so-called "Omnibus" Amateur Radio proceeding, WT Docket 04-140 (FCC 06-149) to the public, a revised version appeared November 15 in the Federal Register <Report & Order>. The changes...

A little over a month after the Federal Communications Commission released the Report and Order (R&O) in the so-called "Omnibus" Amateur Radio proceeding, WT Docket 04-140 (FCC 06-149) to the public, a revised version appeared November 15 in the Federal Register Report & Order. The changes in...

That's great!! Rich

I own an original Tram D-80 and it does not have a roger beep in it. If yours does, I think that someone must have added it, after-the-fact. Can't help you, without seeing the radio. Rich

All brands of power supplies are not created equal. Rich

Unless he is talking about transmitting. The voltage could start sagging with the 5 amp supply, depending upon the draw of the GrantXL. Rich

You agree with W5LZ and not with what I said? You are an interesting, conflicted person. If you do not want to use tuners, go into the final section of your radio and rip out the pi matching network (tuner). Go to your mobile antenna and remove the loading coil (Inductance added to counter...