[NLRS] Where to go instead of 3456...

[Zack Widup]

I posted earlier to the WA1MBA Microwave list that I have had really good
service getting crystals from here:

http://www.krystaly.cz/en/Products/Crystals

They are high-quality and inexpensive. $14 for an HC49/U crystal and $8 for
shipping to USA. They will make single quantities. If you order more, it's
still $8 to ship the whole lot. It's generally taken them a couple weeks to
arrive but has been a little longer due to COVID.

73, Zack W9SZ

On Wed, Apr 7, 2021 at 11:16 AM John Kalenowsky <hamk9jk at gmail.com> wrote:

> Jon's "..73" got appended to the end of the URL he posted for the SBMS
> document. Instead, try:
>
> https://www.w6ife.com/documents/3.4%20GHz/SBMS%203_4%20GHz%202021_04_02.pdf
>
> I recall seeing a posting by someone who said they had chosen 3255 as their
> LO so 3400 would be 145 on their IF radio. They would not be able to get to
> 3398.1 unless their IF transmitter would transmit on 143.1. But that may
> just be one person's choice and not a problem if they are only interested
> in EME.
>
> Is there any reason to go to 3398.1 as opposed to 3399.1 for the
> terrestrial weak signal calling frequency? Would a 1 MHz separation between
> terrestrial weak signal work and EME be enough? Or is there a reason that
> it needs to be 2 MHz? Typical antennas are so directional for the 9cm band
> that it's hard to imagine any sort of interference.
>
> Has anyone looked at the possibility of crystal availability that might
> conveniently multiply to the needed LO frequency?
> An LO of 3254.0 would yield - 144.1 = 3398.1, 145.1 = 3399.1 and 146.1 =
> 3400.1
>
> Whether 3254 or 3255 for LO, I don't see any divisors that get to what
> might be an even MHz (or .5 MHz) as there is for the 3312 MHz used for
> 144.1 = 3456.1 (92.0 MHz * 36 = 3312 MHz).
>
> For now, I guess we're STILL able to use 3456.1, so *some* time to figure
> it all out.
>
> 73, JK
>
>
> On Wed, Apr 7, 2021 at 9:55 AM Jon Platt via NLRS <nlrs at mailman.qth.net>
> wrote:
>
> > Hello NLRS land.  There is ongoing information and discussions regarding
> > the future of our 9cm band.  It appears that the original doom and gloom
> > prediction of loosing the entire band to amateur radio use has changed
> > (good news) and that we will be maintaining a chunk of that spectrum at
> > 3.30 to 3.45 GHz.   This does mean that many of us with legacy equipment
> > will have to re-align them (if possible) from the current calling
> frequency
> > of 3456.100 MHz.   There is ongoing discussion about what may be the best
> > terrestrial based weak signal calling frequency, either 3398.100 or
> > 3400.100 MHz.  The SBMS has posted their thoughts on this subject at
> >
> https://w6ife.com/documents/3.4%20GHz/SBMS%203_4%20GHz%202021_04_02.pdf..73
> ,
> > JonW0ZQ
> >
> >
> ______________________________________________________________
> NLRS mailing list
> Home: http://mailman.qth.net/mailman/listinfo/nlrs
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:NLRS at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
Virus-free.
www.avg.com
<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>