[TenTec] Argosy 525 - three different RX mixers?

[Gerry Pement]

In reply to the Ten Tec Argosy receiver Mixer postings My Argosy Serial# 
00721 has the 2 1496 Ic's on the mixer board so it is the early version 
of the Receiver Circuit. Mine has the 223 NB Board. I guess they Changed 
to the other version with the Diode Ring Mixer starting with SN 825 when 
the required the 223A NB Board. I think the only mod I will do is 
Changing the AGC cap to 22uf 35V tantalum Cap. I hope that clears up the 
Argosy Mixer postings. I think my Argosy is early 1982 I found one 8217 
date code IC in it the rest are 81xx date coded. I still really enjoy 
QRP on that Argosy.
73
Gerry VE7BGP