[Moon] [Moon-Net] EME on 2.4GHz?

JdB PA3DZL de Bruijn pa3dzl at icloud.com
Fri Jun 12 12:54:27 CEST 2020


I totally agree with Peter.

X-band operation makes it a bigger challange. 
I still remember my first X-band QSOs to VK, JA and the USA ... how very impressed I was to hear a station reply on an other QRG ... especially RANDOM QSOs !! 

As already mentioned a SDR helps a lot as you can see a bigger portion of the X-band. 

Would love to see many more stations 13cm, do not stop but keep going.

Regards, 
Jac, PA3DZL 

Sent via my iPhone

> Op 12 jun. 2020 om 11:30 heeft Peter Blair via Moon-net <moon-net at mailman.pe1itr.com> het volgende geschreven:
> 
> 
> 13cm is in fact the EME sweet spot. The power is relatively easy these days, LNAs are extremely good, the sky noise is a minimum, libration is only a little worse than 23cm and if you are building your own dish the tolerances are very manageble. With the same dish size and power, echoes are 5dB stronger than on 23cm. Whats not to like as they say? If you want the thrill of making EME ssb QSOs then 13cm is the band.
> On the question of countries.... In the last DUBUS/REF CW/ssb contest I worked 32 stations on full random in 14 countries ( see post of 25th May) and there were at least 40 stations active with 3 or 4 more countries that I didnt work. Thats a pretty good distribution of activity. My overall countries score is 48 with 149 initials but thats not the highest by any means.
> Yes we have the challenges of multiple allocations and cross band working but isnt this hobby supposed to be about experimentaion and innovation and an SDR makes it far simpler than it was.
> 73 Peter G3LTF
>  
> From: Jay Epae via Moon-net
> Sent: Thursday, June 11, 2020 8:50 PM
> To: moon-net at mailman.pe1itr.com ; Grant VK5GR ; Bob Atkins
> Subject: Re: [Moon-Net] EME on 2.4GHz?
>  
> Hi folks!
> 
> Here in Sweden, the situation for 2.4 GHz is ridiculous. We initially had
> the entire 2300-2450 MHz range with full legal power. Some time in the
> nineties (if I remember correctly), the power limit was severely reduced
> to 100 mW (yes, milliwatt) into the antenna system. To make it even worse,
> we lost the entire 2300-2400 range just a few years back. This leaves us 
> with only 2400-2450 MHz and that persisting 100 mW limit. The lawyers
> at PTS (our Telecom authority) are not interested in ham radio, nor do they
> even understand what ham radio is, so, the situation is not likely to change 
> anytime soon.
> 
> There has been the possibility to apply for temporary higher power permits
> but as we have seen lately with operators wanting to work Oscar 100 with
> decent size dishes, applications have been generally denied with very few
> exceptions. In this case we're talking about a measly 10 W or thereabout into
> the antenna system.
> 
> 73 de SM0OFV / Janne
> 
>  
> Skickat från Outlook
>  
> Från: Moon-net <moon-net-bounces at mailman.pe1itr.com> för Bob Atkins via Moon-net <moon-net at mailman.pe1itr.com>
> Skickat: den 11 juni 2020 08:56
> Till: moon-net at mailman.pe1itr.com <moon-net at mailman.pe1itr.com>; Grant VK5GR <vk5gr.radio at gmail.com>
> Ämne: Re: [Moon-Net] EME on 2.4GHz?
>  
> Grant
>  
> It's hard to keep track but I think in the US it's nominally 2304 (but we have 2300 to 2310 MHz and 2390 to 2450 MHz). In most of Europe I think EME is at 2320, in Japan it's 2424 and in VK it's just below 2302 MHz (but you would know that better than I do!). This is just from my notes, I'm not on 13cm myself
> 
> I'm not sure all Europe still has usable 13cm allocation for EME, I know some places were/are in danger of losing it or having restriction on power/frequency that would make EME impractical.
> 
> The multiple frequencies and possible loss of activity from Europe have pretty much dissuaded me from building to get on 13cm. If I'm going to add a band to my existing 432 and 1296, 10Ghz is probably where I'll go
>  
> 73
> Bob, KA1GT
> From: Moon-net <moon-net-bounces at mailman.pe1itr.com> on behalf of Grant VK5GR via Moon-net <moon-net at mailman.pe1itr.com>
> Sent: Wednesday, June 10, 2020 7:05 AM
> To: moon-net at mailman.pe1itr.com <moon-net at mailman.pe1itr.com>
> Subject: [Moon-Net] EME on 2.4GHz?
>  
> Folks,
>  
> Starting to ponder my future EME projects. One question I have is where are EME operators on the 2.3/2.4GHz band today? How many countries still have 2300-2301MHz or has it all moved to 2400-2401?
>  
> Regards,
> Grant VK5GR
>  
> Email: vk5gr.radio at gmail.com
> Website: https://vk5gr-iota.net/
>  
>  
>  
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