[ANSS-netops] ANSS-netops Digest, Vol 75, Issue 3

[VLF]

The power consumption in XMIT mode is 1.7W, however,  the actual power
output is +21dBm or 125mW.

Greg Steiner
VLF Designs
1621 Bella Vista Dr.
Jackson, Mo. 63755

573-204-1286 Office
573-204-4218 Plant

vlf at cablerocket.com
www.vlfdesigns.com


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Today's Topics:

   1. Re: EB3-Plus radios and replacement (Meremonte, Mark)


----------------------------------------------------------------------

Message: 1
Date: Tue, 18 Oct 2016 16:46:34 -0600
From: "Meremonte, Mark" <mmeremonte at usbr.gov>
To: "Hammond, William R. (CDC/NIOSH/OMSHR)" <xcn5 at cdc.gov>
Cc: "anss-netops at geohazards.usgs.gov"
	<anss-netops at geohazards.usgs.gov>,	"Juan at geohazards.usgs.gov"
	<Juan at geohazards.usgs.gov>
Subject: Re: [ANSS-netops] EB3-Plus radios and replacement
Message-ID:
	<CAHnsS_D7UoiGz1=uK8yqced7svO3LcC5JbaHNcx6aXav=0ZShQ at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

We use the GE MDS iNet-II 900 MHz spread spectrum radios but they are
expensive and fairly complex connecting to to loggers via serial port and
unable, with version we have, to select specific channels to utilize.
These radio specs look very good.   Interesting Avalon radios have ability
to Tx at 1.7W rather than the FCC requirement.

*********************************************************
Mark Meremonte         Geophysicist
U.S. Bureau of Reclamation:  Seismology, Geomorphology, and Geophysics Group
Denver Federal Center            Work: 303-445-3298  Cell: 303-808-3894
POBox 25007, 85-833000      Email: mmeremonte at usbr.gov
Denver, CO  80225                  Web: http://www.usbr.gov
Ship:  U.S. Bureau of Reclamation, DFC, Bldg. 67-10th Floor, Denver, CO
80225
**********************************************************

On Tue, Oct 18, 2016 at 2:05 PM, Hammond, William R. (CDC/NIOSH/OMSHR) <
xcn5 at cdc.gov> wrote:

> We also use Avalan 900 MHz radios for a number of our broadband 
> stations with great results and for all the reasons Juan states.
>
>
>
>
>
> Bob Hammond
>
> Physical Scientist
>
> CDC/NIOSH Spokane Mining Research Division
>
> 315 E. Montgomery Avenue
>
> Spokane, WA 99207
>
> 509-354-8076
>
>
>
>
>
>
>
> *From:* ANSS-netops [mailto:anss-netops-bounces at geohazards.usgs.gov] 
> *On Behalf Of *Juan B Lugo Toro
> *Sent:* Tuesday, October 18, 2016 11:29 AM
> *To:* Mitchell Gold <goldm at ldeo.columbia.edu>
> *Cc:* Juan at geohazards.usgs.gov; anss-netops at geohazards.usgs.gov
> *Subject:* Re: [ANSS-netops] EB3-Plus radios and replacement
>
>
>
> Hi Mitchell
>
>
>
> We have been using Avalan (900 Mhz) radios. They are not expensive, we 
> use also filters with these units to avoid interference. The maximum 
> range that we are covering now is 17 miles around 27.4 Kms. They can 
> be use for outdoors also. They are like plug and play easy to install. 
> We used before the EV-1 but they are more expensive.
>
>
>
> I hope this will help you. If you need more details just let me know.
>
>
>
> Best Regards
>
> Juan Lugo
>
>
>
> On Tue, Oct 18, 2016 at 2:00 PM, Mitchell Gold 
> <goldm at ldeo.columbia.edu>
> wrote:
>
> I recall a few people mentioning EB3-Plus radio failures at the 
> meeting, and I was wondering if someone could mention what failure 
> modes they're seeing? We have had a few that become non-responsive 
> even after rebooting, come up in error, and some of those have 
> recovered inconsistently after multiple power cycles. In a couple of 
> cases it also appears the RJ-45 is not working. Do these sound 
> familiar, and are there any possible fixes (hardware or firmware)?
>
> Are there any suggestions for a 900 MHz replacement?
>
> Regards,
> --Mitch
>
> --
> Mitchell Gold
> Lamont Cooperative Seismographic Network goldm at ldeo.columbia.edu
> 845-365-8583
>
> _______________________________________________
> ANSS-netops mailing list
> ANSS-netops at geohazards.usgs.gov
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>
>
>
>
> --
>
> Juan Lugo
>
>
>
> Tel: (787)833-8433
> Fax: (787)265-1684
>
>
>
> _______________________________________________
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>
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