Re: high-def over the air
<TheWebJunkie@xxxxxxxxx> wrote in message
Even if the 2.4 GHz splitter has insertion loss of 4 dB and the 1 GHz
splitter's loss is only 3.5dB?
At what frequency? 4 dB across all frequencies?
If it was at all frequencies, then I would reconsider, if I knew for sure
that the 1 GHz splitter would work, and that a 2 GHz splitter would never be
needed in the future (this was an attic installation and didn't want to have
to go back up there in the future) then I would get the 1 GHz splitter.
- Re: high-def over the air
... but it usually is needed for HD on cable and satellite systems. ... A friend of mine had a problem with most of the HD stations from his cable system, and replacing the old splitter with a 2 GHz version solved the problem. ... If it were me, I would put in a 2 GHz splitter even for off-the-air since it is only a few dollars more, and I have no way of knowing whether the OP's old splitter can even handle 750 MHz. ... frequencies up to 1 GHz, but a 1 GHz splitter should still do the trick. ...
- Re: uWave relays ?
... The common FR4 type material is generally not well specified in terms of Er or dielectric loss. ... That is why you will find that most designs at these sort of frequencies use better materials with tighter specified Er and lower loss, and quite often with higher Er so that the lines are shorter. ...
- Re: Matching Coax Impedance: To Receiver or To Antenna ?
... frequencies the most important factor is loss per foot. ... lowest loss per foot in the frequency range you want to receive on. ... Coax loss goes up per foot at higher frequencies. ... receiver is so high that it will compensate for this mismatch. ...
- Re: Question on SWR
... If most of the the cable loss is due to I^2R, how can one explain that the foam versions of common coaxial cables show a much lower loss than versions having solid PE insulation? ... Another trap for the unwary, when comparing coax losses, has to do with skin effect and the thickness of the copper or silver cladding on the center conductor. ... You could have an air insulated coax with silver plated over stainless steel where the loss is actually greater at low frequencies than higher, because the skin depth is greater at low frequencies and the current is flowing mostly in the SS, rather than the copper. ... A long time ago, we found this out at work when trying to find drop cables and miniature cables which we could be used as simulations of large-diameter, low-loss CATV trunk cables. ...
- Re: coaxpair reflection coeff angle is zero
... >>>I've provided a spreadsheet that facilitates the calculations over a ... >>>range of frequencies. ... loss doesn't have much effect. ... >have a significant effect on the observed input impedance. ...