[Premium-Rx] WJ 8712

[AC7ZG]

NachrichtAlso the chips for the 8712a and 8712p are also available from the
manufacturer.
  -----Original Message-----
  From: premium-rx-bounces at ml.skirrow.org
[mailto:premium-rx-bounces at ml.skirrow.org]On Behalf Of Michael Starke
  Sent: Wednesday, September 28, 2005 12:15 AM
  To: premium-rx at ml.skirrow.org
  Subject: [Premium-Rx] WJ 8712


  Hello Group,

  The WJ-8712 can be turned into a HF-1000 like receiver by simply replacing
two EPROM's:
  Ref.- # U12 & U56. In the 8712 they can be labelled the following way:
(8712 A2 U12 1.4.4) or (871X A2 U56 1.2.0)
  Likewise the HF-1000 EPROM's are labelled similar.

  I have a 8712-1 with the HF-1000 chips in it.
  Where the 8712-1 has 5 IF bandwidths (0.3, 1.0, 3.2, 6.0, 16.0kHz), the
HF-1000 has 58 of them (0.056 - 8.000kHz),- if I counted right. Additional
bandwidth custom made by WJ. Apart from a wider bandwidth when exchanging
the two IC's, I do not see any other difference between the two.

  Regards.
  Michael Starke
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