Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

On 5/31/2016 3:30 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: Please excuse my ignorance, but how would one lock a 116 MHz 5th overtone crystal oscillator to 10 MHz with no difficulty? Do you have a circuit you share that would give low phase noise, and if so how low? If you

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

Hi > On May 31, 2016, at 6:30 AM, Dr. David Kirkby (Kirkby Microwave Ltd) > wrote: > > On 30 May 2016 17:01, "Richard (Rick) Karlquist" > wrote: >> >> On 5/30/2016 4:06 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: > >>> I'm

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

On 30 May 2016 17:01, "Richard (Rick) Karlquist" wrote: > > On 5/30/2016 4:06 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: >> I'm wondering what's the best way to generate 116 MHz with very low phase >> noise. Phase noise at < 20 kHz offset is particularly important,

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

I'm really surprised at all the complicated solutions posted here. A 116 MHz crystal oscillator is not rocket science. Croven Crystals will sell you a custom resonator. The whole circuit is like a dozen components. Rick N6RK ___ time-nuts mailing

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

Tim wrote: If you want to make it time-nutty, there's the NIST JFET "push-push" frequency doubler we've talked about here in the past. As I noted during the push-push doubler discussion, a push-push FET doubler works much better if one does not run the FETs to cutoff. This is because the

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

14.5Mhz doubled is 29.0Mhz right in middle of 28 - 30 Mhz where the output will be. Quite likely to give a "birdie" Will.. On 05/31/2016 07:06 AM, Tim Shoppa wrote: OK, it sure sounds like you want to use a commercial signal generator or something. But a different take: 14.5MHz is a

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

/plvcxo/CJ2010. pdf . 73 de Claudio, IN3OTD / DK1CG >Messaggio originale >Da: "Dr. David Kirkby (Kirkby Microwave Ltd)" <drkir...@kirkbymicrowave.co.uk> >Data: 30-mag-2016 11.06 AM >A: "Discussion of precise time and frequency measurement" >O

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

OK, it sure sounds like you want to use a commercial signal generator or something. But a different take: 14.5MHz is a standard stocked crystal at Mouser, Digikey, etc. Three stages of doublers with simple fundamental-reject filters at each stage get you to 116 MHz. If you want to make it

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

Alexander Pummer wrote on Montag, 30. Mai 2016 16:25 >KVG Neckarbischofshofen used to have a crystal in a glass envelope, which was >made just for that purpose it was third overtone crystal ask Bernd if that is >still available, of course you would need a low noise power amplifier to get

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

On 5/30/2016 4:06 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: I was thinking about designing a 2 m (144-146 MHz) ->HF (28-30 MHz) transverter, using a 116 MHz local oscillator feeding a level 30 mixer. 116 + 28 = 144 116 + 30 = 146 I'm wondering what's the best way to generate 116 MHz

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

On 5/30/16 4:06 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: I was thinking about designing a 2 m (144-146 MHz) ->HF (28-30 MHz) transverter, using a 116 MHz local oscillator feeding a level 30 mixer. 116 + 28 = 144 116 + 30 = 146 I'm wondering what's the best way to generate 116 MHz

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

oun...@febo.com> en nombre de Dr. David Kirkby (Kirkby Microwave Ltd) <drkir...@kirkbymicrowave.co.uk> Enviado: lunes, 30 de mayo de 2016 13:06 Para: Discussion of precise time and frequency measurement Asunto: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ? I was thinking abo

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

I was thinking about designing a 2 m (144-146 MHz) ->HF (28-30 MHz) transverter, using a 116 MHz local oscillator feeding a level 30 mixer. 116 + 28 = 144 116 + 30 = 146 I'm wondering what's the best way to generate 116 MHz with very low phase noise. Phase noise at < 20 kHz offset is

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

KVG Neckarbischofshofen used to have a crystal in a glass envelope, which was made just for that purpose it was third overtone crystal ask Bernd if that is still available, of course you would need a low noise power amplifier to get that 1W 73 KJ6UHN Alex On 5/30/2016 4:06 AM, Dr. David

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

Hi There are a lot of published circuits for low noise VHF crystal oscillators. At the offsets you are talking about the phase noise is mostly a function of simple signal to noise. More power in the crystal == lower noise. You should be able to do better than -165 dbc/Hz with a little

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

May be using DDS chips ? Here is interesting work regarding DDS Phase Noise : http://rubiola.org/pdf-articles/conference/2012-ifcs-DDS.pdf On 2016-05-30 07:06, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: I was thinking about designing a 2 m (144-146 MHz) ->HF (28-30 MHz) transverter,

[time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

I was thinking about designing a 2 m (144-146 MHz) ->HF (28-30 MHz) transverter, using a 116 MHz local oscillator feeding a level 30 mixer. 116 + 28 = 144 116 + 30 = 146 I'm wondering what's the best way to generate 116 MHz with very low phase noise. Phase noise at < 20 kHz offset is