Re: [time-nuts] Voltage on antennas

2013-03-14 Thread Mike S
On 3/13/2013 7:36 PM, Ed Palmer wrote: You can also put a 5-volt GPS on port 1 to match your 5-volt antenna and GPSs with other voltages, e.g. 3.3 or even 12 volts, on the other ports. This way, you don't lose the use of one port. That's the last thing I'd want to do, literally, since that

Re: [time-nuts] Voltage on antennas

2013-03-14 Thread Azelio Boriani
The LEA-5T accepts the 5V for the antenna supply: from the datasheet you can see an absolute maximum of 6V for the antenna supply. On Thu, Mar 14, 2013 at 11:40 AM, Mike S mi...@flatsurface.com wrote: On 3/13/2013 7:36 PM, Ed Palmer wrote: You can also put a 5-volt GPS on port 1 to match your

Re: [time-nuts] Voltage on antennas

2013-03-13 Thread lstoskopf
Some of the little magnetic attached antennas on eBay will operate on 3-5V. More problematic is using the older antennas which require 5V with the newer chips such as the LEA-5,6,7 series which run on 3.3V. There is an internal Bias T, but I haven't tried to bring in 5V through the Vant pin

Re: [time-nuts] Voltage on antennas

2013-03-13 Thread Mike S
On 3/13/2013 6:40 PM, lstosk...@cox.net wrote: Some of the little magnetic attached antennas on eBay will operate on 3-5V. More problematic is using the older antennas which require 5V with the newer chips such as the LEA-5,6,7 series which run on 3.3V. Some distribution amps will all you to

Re: [time-nuts] Voltage on antennas

2013-03-13 Thread Ed Palmer
On 3/13/2013 5:19 PM, Mike S wrote: On 3/13/2013 6:40 PM, lstosk...@cox.net wrote: Some of the little magnetic attached antennas on eBay will operate on 3-5V. More problematic is using the older antennas which require 5V with the newer chips such as the LEA-5,6,7 series which run on 3.3V.