For example with the antenna 1.2m off the ground, only lose fix in one spot on one pass in these trees.
First fix happens in a minute or less, reestablishing a dropped fix takes seconds once the sky is partially open. I use the helical Tallysman antenna in these trees, it outperforms the patch antenna style to keep the fix in treed areas. L2 is a giant leap forward.
Hello PotatoFarmer. Yes, I am on AOG forum. I agree that I am expecting a lot from the single band receivers- but I thought I may as well see if Emlid can throw any light on why my first generation Reach unit just cannot re-establish a fix without needing a reboot before I throw in the towel and move to multiband units.
Spent a bit of time last night researching F9P receivers, unfortunately the Reach M2 is looking quite overpriced compared to other options- it is a pity Emlid dont offer an upgrade scheme for early adopters of their products, since I will need to upgrade both receiver and antenna for base and rover.
I will take your advice on antenna choice- I will be working in the shadow of dense trees at times. I had just been looking at patch antennas, but will see what other options are available.
I think Emlids upgrade scheme is the already low purchase price, John deere wants $14,500cdn for a new starfire 6000 with RTK. The SF6000 has no accuracy benefit over an m2. You can buy 18 M2’s with helical antenna for the price of one deere globe.
I really love the M2 as base for AOG; The ease of base setup, ease of PPP, and ease of networking corrections from it, small form factor, legacy corrections to play nice with Trimbles, and are 100% compatible with F9P. The UI is excellent.
For the base using a survey style antenna with the m2 is a great combination, for the rover on the machine the helical are excellent and do not build up dirt as well. I only wipe down the tallysman if its convenient, have not been forced to stop yet to clean it because of degraded signal.
I should say that you’re good at data analysis! I’ve checked the data, and I agree with you: there are just not enough satellites to calculate a Fix in most cases.
As discussed here before, the forest is too harsh conditions for a single-band device. But I have a small suggestion for you.
There’s indeed a potential to calculate a Fix. However, besides satellites with a high SNR, satellites with a lot of cycle slips appear at this time. They are low above the horizon. In such cases, increasing the elevation mask can help.
Also, I want to comment on the upgrade scheme. We don’t have one because multi-band devices aren’t an upgrade for single-band. They are just designed for different applications.