>>> receiver with a pair of resistors should get all the levels to match up.
>>>> If you want to get fancy, transformer couple into each receiver after
>>>> attenuating.
>>>>
>>>> Bob
>>>>
>>>> -
Bruce Griffiths wrote:
In which case a linear distribution amplifier is probably required.
With only a ~3V supply available, options for the distribution
amplifier topology are somewhat limited.
In principle you could use an emitter follower driving 4 other emitter
followers with a resistor i
and frequency measurement"
Subject: [time-nuts] Buffer / distribution amplifier for TCXO
Dear time nuts,
Background:
I have built a GPS receiver based around the SE4120L front end IC [1].
I used a KT3225 TCXO [2] at 16.3676MHz driving the front end through
a 10nF series capacitor as in
resistors should get all the levels to match up. If you want
>> to get fancy, transformer couple into each receiver after attenuating.
>>
>> Bob
>>
>> --
>> From: "Henry Hallam"
>> Sent: Wednesday,
Henry Hallam wrote:
On Wed, Aug 4, 2010 at 1:50 PM, Bruce Griffiths
wrote:
The TCXO output waveform is presumably a clipped sinewave as required by the
SE4120L?
I posted the waveform at
http://www.pericynthion.org/stuff/KT3225_500mV_per_div.jpg
Does that count as clipped sine? If
into each receiver
after attenuating.
Bob
--
From: "Henry Hallam"
Sent: Wednesday, August 04, 2010 1:46 PM
To: "Discussion of precise time and frequency measurement"
Subject: [time-nuts] Buffer / distribution ampli
On Wed, Aug 4, 2010 at 1:50 PM, Bruce Griffiths
wrote:
> The TCXO output waveform is presumably a clipped sinewave as required by the
> SE4120L?
I posted the waveform at
http://www.pericynthion.org/stuff/KT3225_500mV_per_div.jpg
Does that count as clipped sine? If not, it seems to work anyway.
ing.
Bob
--
From: "Henry Hallam"
Sent: Wednesday, August 04, 2010 1:46 PM
To: "Discussion of precise time and frequency measurement"
Subject: [time-nuts] Buffer / distribution amplifier for TCXO
Dear time nuts,
Background:
I have built a
Henry Hallam wrote:
Dear time nuts,
Background:
I have built a GPS receiver based around the SE4120L front end IC [1].
I used a KT3225 TCXO [2] at 16.3676MHz driving the front end through
a 10nF series capacitor as in the example circuit in [1]. Inside the
front end, this oscillator is multip
Dear time nuts,
Background:
I have built a GPS receiver based around the SE4120L front end IC [1].
I used a KT3225 TCXO [2] at 16.3676MHz driving the front end through
a 10nF series capacitor as in the example circuit in [1]. Inside the
front end, this oscillator is multiplied up to form a local
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