Saludos, Eduardo ---------- Forwarded message ---------- From: HPSDR Announcement List <[EMAIL PROTECTED]> Date: Thu, Sep 18, 2008 at 10:35 PM Subject: Mercury Alpha 3 results
The following message was sent on the discussion list today and repeated here as it may be of interest to many on this announcement list: All, I [am] very please[d] to advise that the Alpha 3 Mercury board has passed all tests and I will be passing it to Scotty so he can prepare it for production. The performance figures are as follows: ADC overload (preamp on ) -12dBm (preamp off) +8dBm MDS (500Hz) all bands 160m - 6m = -138dBm (preamp on) - 118dBm (preamp off) MDS (500Hz) 6m via Alex preamp = -146dBm IP3 equivalent = +33dBm (preamp on) >50dBm (preamp off) The IP3 is independant of tone spacing. Blocking Dynamic Range 119dB Blocking Dynamic Range was measured at 100kHz and 5 kHz for 1dB gain compression with similar results. The DBR is set by the overload point of the ADC rather than being phase noise limited. 122.88MHz clock phase noise -149dBc/Hz at 1kHz spacing. Mercury has taken longer than we expected to reach production but given the performance figure we are achieving I trust that it will have been worth the wait. We can expect an announcement in relation to pricing, ordering and production time frames from TAPR shortly. 73's Phil...VK6APH [Any TAPR announcement will be sent to this announcement list too.] Don AE5K ................................................................ You are receiving this email because you have asked to receive it by subscribing to the HPSDR-announce list. To unsubscribe, go to http://hpsdr.org/reflector.html and click the "unsubscribe" button, or contact AE5K, the list manager. To change your email address, simply unsubscribe and then resubscribe with new address.
