13cm article for Radcom (possibly!)


G0FVI
 

Thanks for the input guys, very much appreciated!

Andy G0FVI 


geoffrey pike
 

It would be good if you mention the W1GHZ style of fairly inexpensive transverters that you can make using 28mm pipe end stops as the filter elements. These usually produce about 15 dBm output and can drive something from Ebay to get a bit more power
cheers
Geoff
GI0GDP

On Saturday, 26 November 2022 at 11:38:59 GMT, G0FVI via groups.io <andrew.gilfillan@...> wrote:


Morning all,
I'm writing a brief 13cm beginner article for Radcom (hopefully if accepted!) similar to the one I had published on 23cm in January, with a view to hopefully encouraging a few more on the band. I've covered the mobile phone mast interference many of us have experienced and am looking for a spec analyser picture of the large signals that can occur near (or in) the band to include in the article (think GM4DIJ put one up on FB if memory serves but can't find it now!). Will need to be non-copyright but the photo will be credited to the supplier. 

man thanks

Andy G0FVI


Graham G3VKV
 

Hi Andy,
Here is one from Cheltenham, the band is getting very busy
QO100 uplink is a tight squeeze
2 years ago

Graham G3VKV


Ole OZ2OE
 

Hi Andy

- and how things looks over here in JO45VV. Measured 10 years ago with 80 cm dish and 15 dB of LNA amplification. 73 Ole OZ2OE

Den 26. november 2022 kl. 12.38.57 +01.00, skrev G0FVI via groups.io <Andrew.gilfillan@...>:

Morning all,
I'm writing a brief 13cm beginner article for Radcom (hopefully if accepted!) similar to the one I had published on 23cm in January, with a view to hopefully encouraging a few more on the band. I've covered the mobile phone mast interference many of us have experienced and am looking for a spec analyser picture of the large signals that can occur near (or in) the band to include in the article (think GM4DIJ put one up on FB if memory serves but can't find it now!). Will need to be non-copyright but the photo will be credited to the supplier. 

man thanks

Andy G0FVI


Andy G4JNT
 

Here’s a couple. I put a 20dB gain block in to accentuate the plot. 
1.7 to 2.7GHz



On Sat, 26 Nov 2022 at 11:38, G0FVI via groups.io <Andrew.gilfillan=ntlworld.com@groups.io> wrote:
Morning all,
I'm writing a brief 13cm beginner article for Radcom (hopefully if accepted!) similar to the one I had published on 23cm in January, with a view to hopefully encouraging a few more on the band. I've covered the mobile phone mast interference many of us have experienced and am looking for a spec analyser picture of the large signals that can occur near (or in) the band to include in the article (think GM4DIJ put one up on FB if memory serves but can't find it now!). Will need to be non-copyright but the photo will be credited to the supplier. 

man thanks

Andy G0FVI

--
Andy (out keeping fit)


Brian Howie GM4DIJ
 

In message <RV0Q.1669462737336663859.p2Bv@groups.io>, G0FVI via groups.io <Andrew.gilfillan@...> writes
Morning all,
I'm writing a brief 13cm beginner article for Radcom (hopefully if

accepted!) similar to the one I had published on 23cm in January, with
a view to hopefully encouraging a few more on the band. I've covered
the mobile phone mast interference many of us have experienced and am
looking for a spec analyser picture of the large signals that can occur
near (or in) the band to include in the article (think GM4DIJ put one
up on FB if memory serves but can't find it now!). Will need to be non-copyright but the photo will be credited to the supplier. 

man thanks

Andy G0FVI
Is this it ? Feel free.

I used a single cavity filter to get rid of it.

There is a discussion in the group archives . Around March 26th . "Cellphone interference on 13cm - stub notch filter" I tried stub notches but they were no good.

Cheers

Brian GM4DIJ
--
Brian Howie


G0FVI
 

Morning all,
I'm writing a brief 13cm beginner article for Radcom (hopefully if accepted!) similar to the one I had published on 23cm in January, with a view to hopefully encouraging a few more on the band. I've covered the mobile phone mast interference many of us have experienced and am looking for a spec analyser picture of the large signals that can occur near (or in) the band to include in the article (think GM4DIJ put one up on FB if memory serves but can't find it now!). Will need to be non-copyright but the photo will be credited to the supplier. 

man thanks

Andy G0FVI