Hi Brian,
On Wed, 2008-10-22 at 00:46 -0500, Brian Kirby wrote:
All the antenna's I have played with have been +5 volts for power. Is
anyone aware of any other voltages ? (I know Garmin used +3V for some)
Antcom antennas are often 2.5V to 24V.
Aeroantenna's standard versions eats 5V to 18V.
Matthew Smith wrote:
Quoth Chuck Harris at 2008-10-22 15:01...
I'd be interested to know if any antennas are in fact the other
way around. Never even considered that.
It would have been fairly trivial for them to put a bridge rectifier
before the amplifier's power stuff, allowing for either
2008/10/23 Chuck Harris [EMAIL PROTECTED]:
Matthew Smith wrote:
Quoth Chuck Harris at 2008-10-22 15:01...
I'd be interested to know if any antennas are in fact the other
way around. Never even considered that.
It would have been fairly trivial for them to put a bridge rectifier
before the
On 10/21/08 9:31 PM, Chuck Harris [EMAIL PROTECTED] wrote:
Tom Van Baak wrote:
Both the Trimble and Motorola modules use active antennae with 5V power
- what I don't know is whether they are the same polarity.
all my trimbles and oncores have +5 on center, ground on shield...
I'd be
Steve Rooke wrote:
2008/10/23 Chuck Harris [EMAIL PROTECTED]:
Matthew Smith wrote:
Quoth Chuck Harris at 2008-10-22 15:01...
I'd be interested to know if any antennas are in fact the other
way around. Never even considered that.
It would have been fairly trivial for them to put a bridge
Lux, James P wrote:
On 10/21/08 9:31 PM, Chuck Harris [EMAIL PROTECTED] wrote:
Tom Van Baak wrote:
Both the Trimble and Motorola modules use active antennae with 5V power
- what I don't know is whether they are the same polarity.
all my trimbles and oncores have +5 on center, ground on
On 10/22/08 6:04 AM, Chuck Harris [EMAIL PROTECTED] wrote:
Matthew Smith wrote:
Quoth Chuck Harris at 2008-10-22 15:01...
I'd be interested to know if any antennas are in fact the other
way around. Never even considered that.
It would have been fairly trivial for them to put a bridge
On 10/22/08 7:20 AM, Chuck Harris [EMAIL PROTECTED] wrote:
Lux, James P wrote:
On 10/21/08 9:31 PM, Chuck Harris [EMAIL PROTECTED] wrote:
Tom Van Baak wrote:
Both the Trimble and Motorola modules use active antennae with 5V power
- what I don't know is whether they are the same
Lux, James P wrote:
...
But not so trivial to provide the DC blocks in the ground side of the coax.
The LNA is almost certainly some MMIC with RF ground==Vss
Not any worse than providing the DC block on the center of the coax.
There is a significantly different EMI/EMC impact for breaking
Lux, James P wrote:
That's really kind of funny, in 29 years as an engineer, I have never
had an accountant talk to me about design decisions. I tell them what
it will cost, and they say ok.
Lucky you...
Not luck, but a conscious decision to stay out of consumer
electronics. I could
Hi Folks
Finally got the builder here who is going to put my GPS antennae up on
the roof.
I don't have the hardware set up to connect my Trimble Ace II modules to
anything but want to test the cables that I have made up here in my office.
Both the Trimble and Motorola modules use active
On Tue, Oct 21, 2008 at 6:42 PM, Matthew Smith [EMAIL PROTECTED] wrote:
Both the Trimble and Motorola modules use active antennae with 5V power
- what I don't know is whether they are the same polarity. The Motorola
has 5V on the core of the coax - does anyone know if the Trimble ones do
the
Quoth Chris Kuethe:
all my trimbles and oncores have +5 on center, ground on shield...
Thanks Chris. I had guessed that would be the case and was on the verge
of doing a test but decided at the last minute better safe than sorry.
And the Trimble antenna works just fine on the Oncore. The
Both the Trimble and Motorola modules use active antennae with 5V power
- what I don't know is whether they are the same polarity.
all my trimbles and oncores have +5 on center, ground on shield...
I'd be interested to know if any antennas are in fact the other
way around. Never even
Tom Van Baak wrote:
Both the Trimble and Motorola modules use active antennae with 5V power
- what I don't know is whether they are the same polarity.
all my trimbles and oncores have +5 on center, ground on shield...
I'd be interested to know if any antennas are in fact the other
way
Quoth Chuck Harris at 2008-10-22 15:01...
I'd be interested to know if any antennas are in fact the other
way around. Never even considered that.
It would have been fairly trivial for them to put a bridge rectifier
before the amplifier's power stuff, allowing for either polarity.
I
All the antenna's I have played with have been +5 volts for power. Is
anyone aware of any other voltages ? (I know Garmin used +3V for some)
Matthew Smith wrote:
Quoth Chuck Harris at 2008-10-22 15:01...
I'd be interested to know if any antennas are in fact the other
way around. Never
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