[600MRG] RI activation April 19-21

Eric NO3M no3m at no3m.net
Tue Mar 25 23:31:53 EDT 2025


Hi all... barring no unforeseen complications, I'll be activating RI on 
630m over Easter weekend, April 19-21 (two evenings).  RI is the only 
state that currently has had no QSO capable activity on 630m. I've 
secured the callsign W1R and will be setup at a nice open site in the 
Burlingame state park.  Intent to operate based on that location was 
submitted to the UTC (Utilities Technology Council) over 30 days ago 
with no reply, so good to go!

The equipment will be a Multus Geminus SDR, a homebrew 300W class-D 
amplifier deck, and a 35ft toploaded vertical.  I've been testing the 
SDR and amplifier combo over the last three weeks, all solid. The 
antenna was just finished a couple of days ago for testing and I am 
still adding radials to get losses further reduced and should be able to 
get the full 5W EIRP w/ 300W TPO.

Now I'm looking for portable power suggestions... need 12-14VDC for the 
SDR and 24-30VDC for the amplifier (12-14 amps on TX).  The portable 
power station options (Bluetti, etc) look interesting, but I've read of 
significant RFI (though some sources say only at 18MHz and above, yadda 
yadda)... so maybe it would be fine?  Unless someone has direct 
experience with one in particular, surely there's no way to know 
definitely unless I purchase and test one.  Deep cycle batteries?? Two 
in series? Only one with a DC-DC booster for the amp power?  Open to 
ideas and have three weeks to procure and test!  No generators are 
allowed between 8PM - 8AM and I will not use the car / battery... I've 
had issues with that in the past and don't feel like looking for a jump 
each morning!

Thanks for any suggestions and hope propagation cooperates!

73 Eric NO3M
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