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All posts by Charles Herwin

Below are all of Charles Herwin's postings, with the most recent are at the bottom of the page.


B295PN. Weoley Castle area.
External Rooftop aerial aimed at Sutton Coldfield, 15m 7mm coax feed.
Televes H45 Spectrum analyser test set.

All 200kW transmissions good at 68 to 70dBuV
Also Ch48 (not listed as Sutton Coldfield freq): 52dBuV MER 28dB, pic steady-Made in Birmingham & Sony chs.
Chs 33, 35 & 51 (listed as Sutton Coldfield freq with lower power): No signal whatsoever (background noise 17dBuV).
Chs 55 & 56 (not currently listed as Sutton Coldfield freqs) no lock, 55dBuV & 45dBuV with strong slope (higher end of 8mhz bandwidth 8-10dB weaker).
So since the last changes there's no reception of BBC 4 HD or BBC News HD any longer.

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Yes, that could well be the reason for the unusual slope on the high channels, I now realise that Sutton Coldfield are using Ch 38, 55 & 56 instead the ones listed on this page.
Having moved here recently I've yet to get up to the chimney stack, but when I do I'll be sure to have a wideband aerial ready to replace it. I can always fit a filter if I get problems when the 700mhz band starts being used for mobiles. Thanks for your help.

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