Inrad RX7300 Modification While Keeping The External Tuner Jack
How To Use The RX7300 For A Panadapter
One point of confusion may be the jacks on the rear and which one to use?
If you want to connect an RTL-SDR (or other) and use it as the sole receiver, while looking at the radio from the rear, connect the RTL-SDR to the RCA jack on the left leaving the RCA jack on the right open.
If you want to connect a RX antenna (just for receiving), connect it to the RCA jack on the right and leave the one on the left open (or connect an SDR to the one on the left).
No RX antenna? Use a splitter, connect an SDR to it and have two receivers!
BTW, I have a cheap RTL-SDR and I tried a simple VGA splitter from Amazon and it did not work for me. There was too much noise and interference on mine. It may work for others and may be worth a try. The VGA splitter was only a few dollars and it might work better with a better SDR too.
Icom 7300, RX7300, RTL-SDR and Mini-Circuits Splitter
With HDSDR and a cheap RTL-SDR dongle I have a panadapter going. The RTL-SDR receiver is not very good compared to the Icom 7300 receiver. Also, it picks up local AM and FM broadcast stations on the HF bands. That is the downside to the cheap RTL-SDR. If you don’t have strong local AM and/or FM broadcast stations close-by, it should work fine. There are filters you can buy or make for it too.
I have another SDR coming and I’m looking forward to trying it. I’ll post the rest of the installation and results when I have them, so there’s more to come.
Thanks for dropping by, please comment below. Have you tried this?
73 – Rich, K0PIR