New GNSS receiver.

What data collection software do you use/prefer.

We currently use SurvCe with the logger and Carlson GNSS for the Static PP. We are flexible in terms of software, i.e. if we had to change due to a change in receiver, we would. Accuracy and reliability gets preference over our current software package.

Check out what Mark Silver has to offer. He offers excellent products and even better customer support.

Igage RTK

I would take a look at the Spectra Precision SP80. It's economical, servicable and has all of the bells and whistles that the $18k+ units have.

Somebody else said the above SP80 just got a firmware update, and runs well.

I'm an old Javad fan. I have never owned any other brand of GPS. I have had a cluster of 6 Locus units. I have run a set of Legacy E's dual freq for the last 10 or so yrs.
Now, I have a Javad LS.
IF I wanted to "stay conventional" ie, Carlson DC, I'd buy a set of those mushrooms from Javad. Then ones that look like mushrooms. The T-1 units.

The carlson DC has some nice stuff in it.

I'm more familiar with TDS. But, I have run a Carlson unit for a couple of months.

Nate

What's up with the 500? No factory service but I have fixed a half dozen over the past few months. It might be simple, and I might be able to talk you through it.

M

I second the SP80, and it works well with Carlson data collection software. Also has 2 watt internal radio and sim card slot, allowing you it as a network rover with any data collector that does not have wifi.

cwlawley, post: 346306, member: 3114 wrote: I would take a look at the Spectra Precision SP80. It's economical, servicable and has all of the bells and whistles that the $18k+ units have.

Hi, Yes I have heard good reports, especially in relation to surveying near tree canopies. It would be just an evolution from our current kit and definitely the easiest to get used to. Pole position so far.

Mark Silver, post: 346320, member: 1087 wrote: What's up with the 500? No factory service but I have fixed a half dozen over the past few months. It might be simple, and I might be able to talk you through it.

M

Ous issue is with recent results with RTK (ntrip) observations. We have had some large anomalies (8cm / .29 us feet) in Z on control points after long observation times (250+ Epoch). Only 9kms (5.5 miles) from fixed active base. Reseller believes its an RTk network issue and the network provider says there was no cycle slips or any other network issue. Raw RTK accuracy outputs claim 1.5cm delta Z. The X and Y coordinates are within 1cm of true coordinate so the error is isolated to the Z.

We are looking to add to our kit anyways so its not just the Z anomaly that is making us look at the market.

I see the same errors on the vertical in the South of Ireland with Trimble gear on VRS. Take a look at this document from GPS Ireland where they describe inaccuracies of up to 80mm in vertical due to height differences between survey location and nearest active station GPS Ireland doc

I don't use network rtk that often. I run static observations on control and robotic total station the rest. Too many trees here anyway for GPS, I always end up breaking out the robot. It suits my projects to run this way anyway as they are all fairly small.

Where are you located?

I second this opinion. Purchased a SP80 base/rover system a year ago and have been blown away by it's performance. It requires effort to break a fixed solution, unlike my previous HyperLite system that would struggle to stay fixed. Performs really well under canopy and urban canyon conditions. And works well with the SurveyPro software. When I run the base/rover configuration, I commonly track 26 to 28 SVs with 16 to 18 being used in the solution. It's phenomenal. On many occasions I have cross-verified my GNSS results with my total station and found differences of only .01' to .03' both horizontally and vertically. For those in the market, I can't say enough good things about my SP80 system. Give it a serious look!

GeoKid, post: 346279, member: 10810 wrote: Hey Folks,

I'm looking for your views on and affordable replacement for our PM500. We use an RTK Ntrip c.

orrections solution but also Static setups for accurate BM calculations. The PM is on the brink..I have tested the R10/GS14 and I am looking for a slightly more affordable alternative as I feel the prices are slightly elevated fot what we need. Cheers..

Hi GeoKid,
If your looking for a similar handheld type of device, checkout the Satlab Geosolutions - SL300 6G GNSS GIS/RTK Rover.
It has built in GSM modem that works flawlessly has a NTRIP Network RTK Rover. It has an integrated 6G GNSS Antenna and it includes an external 6G Antenna kit. 6G is Satlab's marketing tagline for L1/L2, GPS, Glonass, Beidou, Galileo, QZSS and SBAS Satellite tracking. The Satlab SL300 runs SurvCE, ESRI ArcPad and the newer ESRI Application, ArcGISMobile.

The SL300 GIS/RTK Rover can also be used with our Satlab SL600 IntRTK Base and our free IntRTK Service. Very similar the NTRIP RTK Rover subscription services, but the Satlab IntRTK Service is FREE, simply purchase a Satlab GNSS receiver and your in the Satlab IntRTK club. The Satlab SL300 is definitely worth a look and field test drive. A very inexpensive, affordable handheld GIS Mapping/RTK Cm level RTK Rover. -BbB B-)

Geomax Zenith Pro 25

It was less than the SP80. I have a friend with an SP80 that had lots of issues with the Bluetooth connection. I have had no such problems with the Zenith and have gotten excellent results checking into NGS brass wherever I could find it. (That might be more of a check of the network corrections, but either way the receiver is working fine)