I saw a paper on liquid cooled SS TXs at the 2011 NAB. Usually liquids other than water are used. On 4/30/12 2:45 PM, Joe Subich, W4TV wrote: > On 4/30/2012 12:46 PM, Paul Christensen wrote: > > Or..
That and some of the current high power transistors are being designed to be directly mounted to a heat sink without an intervening insulator. _______________________________________________ Amps mai
I agree. A complete transmitter would solve many technical issues and depending on the implementation, could drastically improve performance. Solid State broadcast transmitters that transmit digital
A good portion of this has already been done. Check the HPSDR group. Also look at the ADAT. The final hurdle is to do this at the legal limit. We did have transmitters back when AM was dominant. I fo
Well AM does not require EER. We have used EER techniques for decades to trick AM transmitters to transmit various things other than AM. EER or envelope elimination and recovery in the old analog day
Dan I agree generally and in principle. There may be a few different ways to do this which is well worth discussing. I am not sure how I got misquoted below. _________________________________________
What is being proposed is more like a legal limit flex radio. SDR goes a long way in helping to forestall obsolesce. _______________________________________________ Amps mailing list Amps@contesting.
When I/Q is via Ethernet, I do not see a connector issue. Any I/Q device I purchase supports Ethernet or I don't buy it. I/Q over Ethernet opens the door to things that were previously very difficult
Ts are not necessarily High pass nor are Ls for that matter. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
I guess you are only familiar with leading Ts and not lagging networks. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listi
That is not entirely correct. A 'digital' antenna is generally one that is either omni or has a wide beamwidth. A bowtie is a 'digital' antenna. Yagis and logs do not usually work so well. Unfortunat
The statement regarding WBBM is not really correct and is typical of why we should be cautious when reading things on the Internet and taking the information as fact. From the mouths of my corporate
I am not sure I understand your point. The bowtie is a good antenna for many reasons. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com
To a degree, yes. It is that the newer DTV tuner chips perform better under multipath conditions where NTSC was very sensitive to ghosts and required a very directional antenna. With DTV, scanning do
I disagree. No one in their right mind would have used an omni to receive NTSC. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailm
An omni would only work in very flat country. I have lived in the country and I have built cable TV head ends in the country and I never saw an omni until after the DTV transition. Semantics can be p
I guess there are some who make an argument even when we essentially agree. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/l
I do not see what a stroll down memory lane has to do with DTV. One has to think differently. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contes
But the decision and implementation was among about 3 people in New York. They knew exactly what they were doing and budgets, including contingencies, were adjusted accordingly in New York. Any major
You got what you got. In most cases the antenna had to be adjusted for each channel. With DTV this is not very practical as the TV must scan the channels seen by the antenna at that instant. ________