Sephiroth wrote:
RFOG will usually need an attenuator because the signal power source is at the house and it is supposed to put out 15dBmv.
In the OP’s case, the downstream SNR whilst within specs, isn’t the best and a high downstream power will amplify the noise. Hence the poor experience. Client62’s advice is sound and you get those attenuators in eBay if the VM bods won’t send you a tech.
I've been studying the RFOG subject and I think I may have got my earlier post wrong. Have a look at this: chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.antronix.com/pdf/DS-1214-FF-A02_R-ONU.pdf
The key information is that the ONU outputs 17dBmv @ 860MHz when converting from fibre into the downstream. The return path (upstream) is put out at a nominal 33dBmv. So, nothing needs attenuation if the ONU used by VM operates to similar parameters.
Anyone seriously disagree with that?