[Premium-Rx] R&S ESVP/ESH3?

[sm0aom at telia.com]

The minimum frequency step is indeed 100 Hz on both the ESH3 and ESVP.
Also, there is no interpolation or "fine tune" control.

For professional applications, this is not any problem, as the frequency raster used in ITU frequency planning is not less than 500 Hz.

A "work-around" that I know has been used is to tune in the last IF of 30 kHz (ESH3) or 10.7 MHz (ESVP) using a receiver with better frequency resolution.

73/
Karl-Arne 
SM0AOM

----Ursprungligt meddelande----
Från : raymond.boute at pandora.be
Datum : 2016-12-22 - 13:17 (UTC)
Till : premium-rx at mailman.qth.net
Ämne : Re: [Premium-Rx] R&S ESVP/ESH3?

Dear All,

I have also been interested in the ESH3 until I 
saw in the spec that the frequency resolution is 
100 Hz.  This is a bit coarse for ham purposes 
since not all SSB transmissions are on exact 
multiples of 100 Hz.  If I am mistaken, please 
correct this information (which might revive my interest in the ESH3).

73
Raymond ON4DBV

=======================


At 10:58 2016-12-21, sm0aom at telia.com wrote:
>I have and use both the ESH3 and the ESVP, and 
>they are not intended as general purpose 
>communications receivers. In particular, their 
>AGC behaviour is something which takes some time 
>to get accustomed to. Performance-wise, they are 
>quite good, but everything is optimised for 
>their role as calibrated selective level meters 
>and EMI receivers. Another aspect is that filter 
>bandwidths and shape factors are not made for 
>communications purposes. With the proper 
>peripheral equipment, they also can be used for 
>band occupancy measurements and for signal 
>quality and frequency accuracy measurements. 
>Those interested in the Frequency Measuring 
>Tests can do worse than with an ESH3 and a 
>GPS/Rubidium frequency standard. 73/ Karl-Arne 
>SM0AOM ----Ursprungligt meddelande---- Från : 
>w2hx at w2hx.com Datum : 2016-12-19 - 18:44 (UTC) 
>Till : premium-rx at mailman.qth.net Ämne : 
>[Premium-Rx] R&S ESVP/ESH3? Hi friends, Does 
>anyone have any opinions on how R&S ESVP/ESH3 
>radios perform as general purpose receivers? 
>I've always had an interest in them, but wasn't 
>sure if they were more appropriate for EMI or 
>some specific purpose. Thanks Eugene W2HX 
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