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525id [2007/10/01 20:33] n5na created |
525id [2007/10/01 20:43] n5na |
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| and NS1W. Thanks too all. | and NS1W. Thanks too all. | ||
| - | Model S/N RX Mixer Front Panel Contributor | + | ^ Model ^ S/N ^ RX Mixer ^ Front Panel ^ Contributor ^ |
| - | 525 00721 1496 (Argosy front panel) VE7BGP | + | | 525 | 00721 | 1496 | Argosy | VE7BGP | |
| - | 525 00748 1496 (Argosy front panel) NS1W | + | | 525 | 00748 | 1496 | Argosy | NS1W | |
| - | 525 00895 4 diode mixer MBD-101 (Argosy front panel) NN8B | + | | 525 | 00895 | 4 diode mixer MBD-101 | Argosy | NN8B | |
| - | 525 ????? 4 diode mixer (Argosy front panel) KW7CD | + | | 525 | ????? | 4 diode mixer | Argosy | KW7CD | |
| - | 525 01096 4 diode mixer (TO-92 diodes not marked: probably MBD101) | + | | 525 | 01096 | 4 diode mixer (TO-92 diodes not marked: probably MBD101) | | WA3FIY | |
| - | WA3FIY | + | | 525 | 01188 | 4 diode mixer MBD101 | | WA3FIY | |
| - | 525 01188 4 diode mixer MBD101 WA3FIY | + | | 525D | 01611 | diode quad ND487C1 | Argosy | N7WIM | |
| - | 525D 01611 diode quad ND487C1 (Argosy front panel) N7WIM | + | | 525D | 01810 | diode quad ND487C1 | Argosy II | WA3FIY | |
| - | 525D 01810 diode quad ND487C1 (Argosy II front panel) WA3FIY | + | | 525D |01892 | diode quad 87clk32 | Argosy II | N4NT | |
| - | 525D 01892 diode quad 87clk32 (Argosy II front panel) N4NT | + | | 525D |02497 | diode quad ND487C1 | Argosy II | N7WIM | |
| - | 525D 02497 diode quad ND487C1 (Argosy II front panel) N7WIM | + | | 525D |02591 | diode quad ND487C1 | Argosy II | WA3FIY | |
| - | 525D 02591 diode quad ND487C1 (Argosy II front panel) WA3FIY | + | |
| So the conclusions are: | So the conclusions are: | ||
| - | 1. 525 Argosy with serial number 0823 or less has a 1496 for rx mixer. | + | -525 Argosy with serial number 0823 or less has a 1496 for rx mixer. |
| + | -525 Argosy with serial number 0824 or greater has a discrete 4 diode ring (most likley using MBD101 schottky diodes) in the rx mixer. They didn't use PN diodes unlike say the 546 Omni series. | ||
| + | -All 525D Argosy have a schottky diode quad ring (even though they may have either an Argosy or Argosy II front panel they all have a digital display). | ||
| + | -Somewhere between serial numbers 01611 and 01810 the 525D got a new plastic front panel with a different name plate (Argosy II). | ||
| - | 2. 525 Argosy with serial number 0824 or greater has a discrete 4 | + | The serial number 0823 comes from the change in noise blanker design hypothesized to match the mixer type: Model 223 for 0823 or less; Model 223A for 0824 or more. |
| - | diode ring (most likley using MBD101 schottky diodes) in the rx | + | |
| - | mixer. They didn't use PN diodes unlike say the 546 Omni series. | + | |
| - | 3. All 525D Argosy have a schottky diode quad ring (even though they | + | 73 DE N7WIM / G8UDP\\ |
| - | may have either an Argosy or Argosy II front panel they all have a | + | Kevin Purcell\\ |
| - | digital display). | + | |
| - | + | ||
| - | 4. Somewhere between serial numbers 01611 and 01810 the 525D got a | + | |
| - | new plastic front panel with a different name plate (Argosy II). | + | |
| - | + | ||
| - | The serial number 0823 comes from the change in noise blanker design | + | |
| - | hypothesized to match the mixer type: Model 223 for 0823 or less; | + | |
| - | Model 223A for 0824 or more. | + | |
| - | -- | + | |
| - | 73 DE N7WIM / G8UDP | + | |
| - | Kevin Purcell | + | |
| kevinpurcell@pobox.com | kevinpurcell@pobox.com | ||
