Hello,

I have a PTP link between a netmetal5 and QRT5.
The area at netmetal is quite noisy, so I planned to switch back to nstreme (in my experience, its much better handling noise).

What is really strange to me: when switching to nstreme, both side seems fallback to 5GHz-A ( I see only 36 and 48mbps values and not HTs) regardless
of selection: 5GHz-A, 5GHz A/N or N only

Using Nv2 i see, connection is N, and datarates like HT-3 to HT-6 (HT-7 is disabled)
but with NStreme, i see 24-36 and 48mbps.

On other places it works as expected (for example 922UAGS or RB433GL)

Anyone met this? Probably some idea? Tried with ROS 6.40 or 6.43 - same...

NV2 is like tank SLOW but best vs heavy noise.

I recommend to use 802.11 because:
1. Nv2 calculates time slots for new transmissions even if you have a PTP, so your upload would be lower.
2. With Nstreme I've noticed that PTP disconnects (tried with 2km link and 20km link), but you have more thourghtput.
3. With two Dynadish I've achieved 30Mbps in both download and upload in a really noisy tower, with Nv2 I got 20Mbps/15Mbps.

If you have to make a PTP don't use QRT, use NetMetal with mANT, they have beamwidth of +/-2.5 degrees, QRT have something like 10 degrees beamwidth or something like that, it's too much.

NV2 is like tank SLOW but best vs heavy noise.

I would not say that. Probably comparing perfect link (no noise, good signal) using NV2 and Nstreme - than NV2 is 10-20% faster, but my experience says, in many cases where
we have even low noise (or distance like 10km) nstreme can be same or better.

Probably comparing a Toyota Supra with a Subaru?

NV2 is like tank SLOW but best vs heavy noise.

I would not say that. Probably comparing perfect link (no noise, good signal) using NV2 and Nstreme - than NV2 is 10-20% faster, but my experience says, in many cases where
we have even low noise (or distance like 10km) nstreme can be same or better.

Probably comparing a Toyota Supra with a Subaru?

Not true
Try nosie from airfiber5 ....nstreme & pure 802.11 just can’t connect ot disconnect many tumes nv2 works & sometimes disrupt airfiber link.

At noisy P2P sides begin with the basics

1. Buy Antenna with minimum side lobes
2. Buy Electronics in shielded Case
3. choose cleanest channel
4. then look at software optimization


QRT has large side lobes!

https://i.mt.lv/cdn/rb_files/qrt5-patte ... 125548.pdf

What antenna is on the over side?

@mistry7 of course, i familiar with the basics.
QRT is on customer side, out of city, no noise.

On the POP side, the antenna is Jirous EX 1foot with protected side lobes (i think, its also have some RF absorber foam inside on sidelobes).
Radio is in metal box.

However my problem is what the post about: with nstreme turned on only 802.11a methods used, if nv2 enabled, 802.11N is used.