[R-390] Official specs

[Ing. Giovanni Becattini]

But when we perform the classical sensitivity test with a modulated signal, do we get the AM or CW value?

Following the instructions I got a value of -104 dBm, i.e. 1.41 uV. Because I used the DA-121, the real value should be even better, far from 5 uV. And surely my R-390A is not as good as it could be .

Is my reasoning correct?

> Il giorno 4 ott 2024, alle ore 16:13, Barry <n4buq at knology.net> ha scritto:
> 
> I don’t think of 1uV as “bad” but most of these radios will beat that. 
> 
> Thanks,
> Barry
> 
>> On Oct 4, 2024, at 8:55 AM, Ing. Giovanni Becattini via R-390 <r-390 at mailman.qth.net> wrote:
>> 
>> Wow, thanks!
>> 
>> By the way, do you know why the sensitivity values were so bad? Are we the ones who are taking measures that are too lenient or are they the ones who were too conservative?
>> 
>> Thanks again
>> 
>> Gianni
>> 
>>> Il giorno 4 ott 2024, alle ore 15:37, Larry Haney <larry41gm2 at gmail.com> ha scritto:
>>> 
>>> Hi Gianni and Barry,  Tom Marcotte and Al Tirevold (SK) obtained and cleaned up the specs for the 390A and put it on our website.  Here's the link: mil-r-13947b– (r-390a.net) <https://www.r-390a.net/mil-r-13947b.pdf>. Unfortunately, the entry in References page indicates it is for the R390(), but it is also the the 390A.  I will be changing that shortly.
>>> 
>>> Regards, Larry
>>> 
>>>> On Fri, Oct 4, 2024 at 4:49 AM Ing. Giovanni Becattini via R-390 <r-390 at mailman.qth.net <mailto:r-390 at mailman.qth.net>> wrote:
>>>> Have ever been released official specs for the 390A?
>>>> 
>>>> The manuals report few data and neither too correct, for what I can understand (e.g., sensitivity)
>>>> 
>>>> Thanks
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