This is the real problem with all this QRP brainwashing. Work the world on 5 watts its easy as using a telephone NOT!
All the QRP radios like the FT817, Flex, IC703 and other that are sold end up with some sort of amplifier down the track. 9 times out of 10 its a crap CB amp or some cheap CB copy kit amp.
These AMPS have horrendous IMD performance because of low battery voltage and uncompensated bias systems. The result on the air is disaster. I have heard all these crummy signals from these stations on the air
and the resulting signal is terrible.
Why anyone would want to put up with a tiny radio, external amp and all the wiring mess when you can buy a decent radio like FT857, TS50 or IC706 is hard to understand. Even in the Flexradios case buying a Flex3000 would have made more sense if the SDR platform is your preferred choice. I guess some people just like doing things the hard way.
From a technical perspective adding using a transceiver with a marginal amp and the resultant IMD is always worst than the radios IMD by itself. Nobody figures this fact into their buy a cheap amp for my QRP radio act.
At the end of the day using these QRP radios has no real power consumption benefits because all these radios are current hogs on receive. You might as well just use a 100 watt normal radio.
I dont know why Flexradio cant design a clean decent amplifier for their products. I see active promotion of RM Italy CB class C products on the Flexradio reflector, just another reflection of their poor technical knowledge.
Now I read another post on the Elecraft reflector. Another joker promoting his poor IMD Flex1500 and using it with a trashy splattering RM CB amplifier. I guess the moderators on Elecraft are going easy on all the new KX3 owners who
will be doing the same. The worlds best QRP radio will be used with the worlds worst CB amps and the who cares if the crud kills your new 10,000 dollar receiver. Ignorance is bliss!
sell the 1500 and get a 100 watt radio. for about the same price, you can get one of the origonal sdr rigs , a ten tec pegasus