W7TCM
| Joined: | Mon, Dec 5th 2011, 04:48 | Roles: | N/A | Moderates: | N/A |
Latest Topics
| Topic | Created | Posts | Views | Last Activity |
|---|---|---|---|---|
| Ring Diode Mixer Substitutions | Jan 22nd 2014, 23:32 | 2 | 7,606 | on 23/1/14 |
| Op Amp Substitution Question | Jan 19th 2014, 23:23 | 3 | 6,835 | on 22/1/14 |
Latest Posts
| Topic | Author | Posted On |
|---|---|---|
| Ring Diode Mixer Substitutions | W7TCM | on 22/1/14 |
| Can a Mini-Circuits TUF-3 be substituted for a Mini-Circuits SBL-1 in a SSB circuit for 40 meters? The TUF-3 is a 4-pin design and the SBL-1 is an 8-pin design, so it requires a different socket. Otherwise, the gain, operating frequency range, isolation levels, voltage, amperage and schematic appear to be equally suitable for 7 MHz processing. Is there an impedance issue, or something else, that prevents the use of the TUF-3 in place of the SBL-1 in the design (MicroR2)? | ||
| Op Amp Substitution Question | W7TCM | on 22/1/14 |
| Thanks. | ||
| Op Amp Substitution Question | W7TCM | on 19/1/14 |
| Building an old design by KK7B that uses NE5514 quad op amps (14-pin PDIP). Can't find a source for them. Have not been able to determine an equivalent currently available direct substitution op amp by cross-reference searches. Anybody out there know what I should use, or where I can get the NE5514s? Thanks. | ||
