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Author Topic: R390A  (Read 505 times)

Offline Gino Italy

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R390A
« on: April 21, 2019, 2024 UTC »
The best!

Rx R&S ESH3,Collins HF 2050,  R&S EK 56, Hallicrafters R45 ARR7, Hallicrafters SX 42, Racal 1778,Teletron TE 712 S, R&S EK 47, R1051 URR, Teletron TE 704, SDR RSP2,  antenna folded dipole B&W -Delta loop for 20mt  and vertical antenna 12mt, dipole 40/ 80 mt, loop magnetic 2mt diameter , 3,5-14,5 Mhz

Offline Gino Italy

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Re: R390A
« Reply #1 on: April 21, 2019, 2218 UTC »
Rx R&S ESH3,Collins HF 2050,  R&S EK 56, Hallicrafters R45 ARR7, Hallicrafters SX 42, Racal 1778,Teletron TE 712 S, R&S EK 47, R1051 URR, Teletron TE 704, SDR RSP2,  antenna folded dipole B&W -Delta loop for 20mt  and vertical antenna 12mt, dipole 40/ 80 mt, loop magnetic 2mt diameter , 3,5-14,5 Mhz

Offline Radio Station

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Re: R390A
« Reply #2 on: April 26, 2019, 1809 UTC »
I have both the A version and the non A version R390. From my tests the R390 performs better on not overloading in the broadcast band with strong signals like the R390A which you can correct. The A version has a different mixing scenario and has one less RF front end tube in it. Being a cost reduction version. The R90A filters are great being a improvement over the non A. I have a SDR interface taped off before the IF filter stage for a wide 50Kc spectrum display or off the IF output up to 16kc wide. This brings the R390/A up to great performance with SDR software.
« Last Edit: April 27, 2019, 0417 UTC by Radio Station »
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