Query re: Forward Path Attenuators and speeds

[AK1122]

Hello all,

I have a query regarding the forward path attenuators. We moved into our current home a few years ago and since then have had a 3dB forward path attenuator attached to the hub and also one to the TV box. The previous occupants had Virgin. The attenuators were connected to an old Hub 2 which has now been upgraded to the Hub 5. When I was setting up the new hub today I did a bit of digging on the forums regarding the purpose of the attenuators and noticed my downstream settings seem to be a way off those recommended in other posts.

As a sidenote I've noticed that with a wired connection via a TP-Link AV1000 gigabit powerline adaptor to my upstairs PC I get half the download speed vs using a WiFi device next to the hub. All cables are Cat 5e or 6. My package is M200 fibre broadband. Could this speed issue be related to the FPA?

Ethernet via TP-Link

WiFi

Would be grateful for any help or advice. Thank you!

These are with the 3dB attenuator connected:

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1	331000000	13.7	41	QAM 256	25
2	211000000	12.7	40	QAM 256	10
3	219000000	12.4	39	QAM 256	11
4	227000000	12.3	40	QAM 256	12
5	235000000	11.9	40	QAM 256	13
6	243000000	11.8	40	QAM 256	14
7	251000000	11.7	40	QAM 256	15
8	259000000	12.3	40	QAM 256	16
9	267000000	12.6	40	QAM 256	17
10	275000000	12.9	40	QAM 256	18
11	283000000	13.3	40	QAM 256	19
12	291000000	13.5	40	QAM 256	20
13	299000000	13.6	40	QAM 256	21
14	307000000	13.8	41	QAM 256	22
15	315000000	13.9	41	QAM 256	23
16	323000000	13.8	41	QAM 256	24
17	339000000	14.2	41	QAM 256	26
18	347000000	14.4	41	QAM 256	27
19	355000000	14.2	41	QAM 256	28
20	363000000	14.1	41	QAM 256	29
21	371000000	13.7	40	QAM 256	30
22	379000000	13.2	40	QAM 256	31
23	387000000	13.1	40	QAM 256	32
24	395000000	13.1	40	QAM 256	33
25	403000000	13.1	40	QAM 256	34
26	411000000	13.1	40	QAM 256	35
27	419000000	13.1	40	QAM 256	36
28	427000000	13.2	40	QAM 256	38
29	435000000	13.2	40	QAM 256	39
30	443000000	12.6	40	QAM 256	40
31	451000000	12.8	40	QAM 256	41

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	46200000	44.5	5120	QAM 64	3
2	39400000	44	5120	QAM 64	4
3	32600000	43.5	5120	QAM 64	5
4	25800000	41	5120	QAM 64	6

[Corey_C]

Thanks for your post and welcome to the Community Forums, AK1122,

It could be due to the attenuator. I've sent you a private message to confirm your account details so we can send someone out to take a look

Cheers,

Corey C

[jem101]

@AK1122 it’s not the attenuator! You do need a higher value one though to drop the downstream power down a bit.

Almost certainly, somewhere in the chain between the router and your desktop PC, one of the Ethernet connections is running at only 100 Mb/s rather than gigabit speed. My guess would be the powerline adapters, check what spec the Ethernet port on them is. The fact that they claim to be AV1000 is irrelevant to this.

[AK1122]

Thank you, I will look into the adapters. I have a feeling it could be them contributing.