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All posts by Adam Cohen-Rose

Below are all of Adam Cohen-Rose's postings, with the most recent are at the bottom of the page.

A
Freeview intermittent interference | Freeview Interference
Sunday 5 January 2014 10:05PM
St. Albans

I'm getting dreadful reception in St Albans and I don't understand what's going on.

I've been retuning my receiver (EyeTV Hybrid connected to an iMac) all afternoon and keep on receiving 100% signal strength and low signal quality as follows:

signal quality 30-60%:
BBCA 658Mhz C44 Hemel

signal quality 10-40%:
SDN 506MHz C25 Crystal Palace

signal quality 0-40%:
ArqA 482MHz C22 Crystal Palace
D3+4 514Mhz C26 Crystal Palace
ArqB 746MHz C55 Hemel

signal quality 0%:
ArqB 529.8MHz C28- Crystal Palace
BBCA 490MHz C23 Crystal Palace
D3+4 634MHz C41 Hemel
SDN 706MHz C50 Hemel
ArqA 778MHz C59 Hemel

I know the BBCA 490MHz C23 signal was very strong yesterday morning as I recorded something and there's no interference in the recording.

I've got a shielded aerial cable (Profigold PGV8905) from the aerial socket to the tuner and there's nothing else connected to the aerial cable until it gets to the aerial outside, pointing south to the Crystal Palace transmitter.

We do have a 4G mast just the other side of the park from the back of our house -- pretty much in the way of the Crystal Palace transmitter, but wouldn't this just affect frequencies around 800MHz?

I suspect some interference but I don't know where it's coming from. The only electrical things powered up in that corner of the room are the iMac (Wi-Fi & Bluetooth turned off), the wired keyboard and mouse, a USB hub and the EyeTV Hybrid itself.

On some of the channels the reception improves when I touch the metal on the end of the aerial cable where it's plugged in to the EyeTV Hybrid.

Can anyone give me any suggestions, or recommend someone reasonably local who could help me diagnose what's going on?

Thanks in advance!

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