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2.4 GHz output
Posted: Mon Mar 20, 2017 9:29 am
by M0HOJ
Hi
What would be the best approach for 2.4GHz: convert from another band (e.g. UHF), or amplify the already existing tiny signal?
I appreciate your expertise and advice.
Thank you.
73 M0HOJ
P.S. Yes, I am already thinking about future EsHailSat 2
)
Re: 2.4 GHz output
Posted: Tue Mar 21, 2017 11:17 pm
by G8GKQ
Hi
I've been waiting for somebody else to answer, but it seems that they don't want to!
If you are considering using the narrow band transponder as well, it would make sense to convert up from a frequency near to where your SSB prime mover will transmit. Portsdown will quite happily provide a video signal on any frequency between 140 and 1500 MHz.
The output power on 2400 MHz is very low (-9 dBm) so you might avoid problems by converting up. If you amplify directly, you'll certainly need to be careful with shielding.
Hope that helps
Dave, G8GKQ
Re: 2.4 GHz output
Posted: Wed Mar 22, 2017 1:32 am
by oe7dbh
Re: 2.4 GHz output
Posted: Wed Mar 22, 2017 9:55 pm
by M0HOJ
Cheers Dave
Thank you for advice.
I have a FT-847, so I can either use 144 or 435 for as up converter FI. The "problem" is I will need to have an output of similar level of the Portsdown tx, so I will have to modify the radio. I wonder if anyone have done that before...
73 FCosta, M0HOJ