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Really? Mine have been great. How did you isolate it to being the P/S?

Dipoles in a lateral angled configuration work just fine. I have been using the setup outlined in the image for several years and have made many contacts (granted this is not 11m but the theory applies).

The GM really prefers to be in the clear. You may not be high enough or have too many things in close proximity.

Good choice on the amp. The 450 XL amps came with either MRF454 / SD2290 / SD1446 transistors. All have about the same output. On SSB I use enough input from the radio (usually around 15-18 watts) such that my output is ~300 watts. On AM I set input from the radio (~3 watts if I recall) to get...

80 watts

PUT THEM ON!

In this case, If the amp is inline and turned on, the SWR meter on the radio is reflecting (hah - punny) the impedance it is seeing from the amp and not the antenna.

The flipside is adjust the output of the radio to the specs of the transistors in the amp. Assuming 2x2SC2879, (100 to 125 watts each) AM: adjust radio output so the dead key with the amp engaged is ~ 60 watts, If the radio is in spec, expected PEP would be ~240 watts. SSB: adjust radio output...

"Best base antenna for under 100 dolls" I'd go with a Sirio M400 "Starduster". When comparing an A99 to the Starduster at the same height and location, I found the Starduster as good if not slightly better performance wise and a much lower "urban" noise floor.

So how do you like it?

Most of the ICOM radios seem to like ALC higher on the scale. I run my 7300 @ ~80% of the ALC range indicator.

Yes, the slack is for wind. I don't even recall having to cut anything (but then it's been about 5 years).

I own and have used both. I prefer the Gainmaster. It has a lower noise floor on the receive side. It is less prone to RFI impacting neighboring devices. It is about an S-unit better on both transmit/receive *at my location. *The GM likes to be in open space. Many have reported performance...

Agreed - the D710G is a lot of radio. The APRS functionality is useful to me. The V71A can adopt the D710G head so I don't know that there is a significant difference on the radio side. I'd go with a V71A any day if I did have the need for the extras. I also use a TM-281A and for what it is...

If I didn't have a TM-D710G (aka the bigger brother) a TM-V71A would be my choice. I have used several and always had good audio reports (as with all the KW's I hev used). I haven't experienced and intermod, so I don't know if that is because it is good, or just wasn't in a bad environment. I...

Some notes of mine from 2015. Optima @ 10 PEP SSB | 3.8 amps | Dummy Load | Power Supply at 13.8v MFJ-826B Meter, Megawatt 36s P/S KL-503 Variable | Amperage Draw| Output Setting 6 | 32.5 amps | 200 watts Setting 5 | 30.6 amps | 192 watts Setting 4 | 30 amps | 185 watts Setting 3 | 28 amps |...

Donny, try adding a 1:1 balun (though you can still just tune using different measurements). I use a cheap mfj-915 isolator which seems to tame the SWR numbers.

Here's what I have been using @ 20 feet . It covers 27.385 and targets 28.300 All numbers in inches A =156 B = 21 C = 6.75 D = 29.75 E = 57.5

I too have used a stock CB w/o an amplifier and made contacts. I also can share times where the receiving end was 15 miles away and I couldn't make contact, in part (hence my reference) due to the high noise floor on the receiving end. Times have changed and there is more and more RF noise in...

..because 4W barely get's over the urban noise floor these days?