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Re: [Amps] Solid State Amps

Subject: Re: [Amps] Solid State Amps
From: "Roger (K8RI)" <>
Date: Sat, 18 Oct 2014 20:37:37 -0400
List-post: <">>
On 10/18/2014 1:23 PM, Manfred Mornhinweg wrote:
I think that even the displays for smart phones and hand held devices are generic. It's the drivers that are custom. In essence they are nothing more than a miniature computer monitor screen. Why not use the same for displays in ham rigs.

HRD and SDRs use a generic computer screen to display a rather elaborate display. I'd prefer the LCDs with an LED light source. They can produce characters of a very high definition. Small, generic LCD screens could be produced for pennies, or at most, a few dollars as you can now purchase a 40" smart HD TV receiver for $300-$400. There are relatively inexpensive video driver chips and generators that could replace the displays on many high end rigs if the rigs were designed in such a way as to not require custom displays, but few purchase rigs with sustainability in mind. Even if we did, there is little on the market that would qualify and that goes well beyond the displays. How many transistors used in SS rigs over the last two decades are no longer available?

However, HRD and other Graphical interfaces can replace most of the front panel, let alone the individual displays on today's rigs. If using HRD you might not even notice a failed, non essential display. The problem is physically replacing any display on today's rigs. Those displays and drivers are produced in batches. Once it's no longer financially a viable option to purchase those batches, the rigs days are numbered as for resale


Roger (K8RI)

The industry standard dot matrix display is a great idea, but what
chance manufacturers agree to such a selfless act of kindness to us
end users? ;) Individuality has its costs...

I'm not sure if perhaps you misinterpreted my "industry standard dot matrix display" concept. I don't mean that Kenwood, Icom, Vertex, etc, should define a standard shared by them! What I do mean is using _existing_ industry standard displays, instead of special displays custom-made for each radio model. So the manufacturers of ham equipment don't need to agree.

The displays I mean range from small, single line, 16 character ones, over 2 line, 4 line, all the way to graphics-capable ones. Their electrical interfaces are so well standardized that one can usually be swapped for another with little or no changes, and they exist in several more or less standard physical sizes.

If just one manufacturer sells radios built just from standard parts, with nothing critical customized in any way, and the buyers prefer those radios over any using special parts, it would be a win-win situation, and the other manufacturers would be forced to follow.

But of course this scheme fails, because 98% of all hams buy radios without the slightest regard for long-term maintainability, and aren't even able to tell a custom display from a standard one! And since custom displays are usually prettier than standard ones, radios with custom displays sell better...


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