Firstly, its not HF vs VHF, it is SSB vs FM. New SSB VHF/UHF transceivers like the IC-9700 are also expensive. SSB radios require tighter tolerances, better signal:noise ratios, narrower filters, and so forth. Also there is a market-of-scale issue.Apr 6, 2019
Why are old amplifiers so expensive?
Vintage audio equipment is expensive partly because of rarity (a lot of vintage gear has been discontinued) and partly due to the inherent quality and design required for its longevity. A vintage piece of gear must be of the highest quality to perform at the highest level decades after manufacture.
Why are stereo amplifiers so expensive?
In general a transistor has many problems like power dissipation, thermal run away . This leads to ultimate destruction of the transistor. To overcome this problems power transistors are used. The best amplifiers has good durability and hence costly..
How do you amplify a ham radio signal?
- Use better antenna.
- Use more transmit power.
- Increase the height of antenna.
- Use directional antenna instead of omni directional antenna.
What does a linear amplifier do?
A linear amplifier is an electronic circuit whose output is proportional to its input, but capable of delivering more power into a load. Other types of linear amplifier are used in audio and laboratory equipment. Linearity refers to the ability of the amplifier to produce signals that are accurate copies of the input.
How do you adjust a valve amp?
https://www.youtube.com/watch?v=harkrTLWDp0
Is amplifier linear or nonlinear?
Signal Distortion and Feedback in Nonlinear Circuits As an example, consider an operational amplifier, which is a common nonlinear circuit element. When driven with a low level input signal, the output will be a linear function of the input. At high input, the output will level off and saturate at a fixed value.
Why should an amplifier be linear?
Linearity refers to the ability of the amplifier to produce signals that are accurate copies of the input. A linear amplifier responds to different frequency components independently, and tends not to generate harmonic distortion or intermodulation distortion.
Why amplifier is non linear?
There are three primary reasons for needing a non-linear amplifier: 1) the signal of interest has a known, unavoidable curve or nonlinearity of its own, so the amplifier must compensate for it; 2) or, the signal may sometimes become so large that it overloads the input of the next stage.