Greetings and salutations all,
I have a project where I am seeking to evaluate the baseband 10.7 MHz performance of my vacuum tube tuners like the Sherwood S-3000 series. The 200 kHz specification adopted for FM broadcasting in 1945 has been baked into every FM radio, tuner, and receiver produced to this day. I am going to attempt to inject a baseband 10.7MHz signal into the signal chain just after the IF of the Golden Eagle. I have no service documentation for the Audemat-Aztec Golden Eagle FM HD receiver. I am asking for any information about how to source such documentation. Audemet/Worldcom no longer supports legacy EOL products, and has no parts, service, documentation.
So I am asking for any information about how to source service documentation for these units.
I currently have a plan to internally inspect the units I have to see if they can be easily modified. If modification is not easily attainable I can install a small double balanced mixer and upconvert the IF baseband signal to an unused FM frequency. I have a Marconi 2018 synthesized RF generator to use as an LO source. The Golden Eagle has room on rear for adding 3 SMA connectors for interconnection to the antenna connectors.
I have debugged the methodology of getting the baseband signal from the S-3000 tuner. Remove the FM driver tube before the discriminator and taking the signal from pin #2 for the grid.
How did I come to owning 2 Golden Eagles? I was looking for an FM HD radio/receiver for my test bench. While searching eBay for HD radios, search results turned up some broadcast monitoring receivers like the Golden Eagle. In fact several Golden Eagles. I purchased 2 for my test bench.
Best regards to all,
rca7591a
I have a project where I am seeking to evaluate the baseband 10.7 MHz performance of my vacuum tube tuners like the Sherwood S-3000 series. The 200 kHz specification adopted for FM broadcasting in 1945 has been baked into every FM radio, tuner, and receiver produced to this day. I am going to attempt to inject a baseband 10.7MHz signal into the signal chain just after the IF of the Golden Eagle. I have no service documentation for the Audemat-Aztec Golden Eagle FM HD receiver. I am asking for any information about how to source such documentation. Audemet/Worldcom no longer supports legacy EOL products, and has no parts, service, documentation.
So I am asking for any information about how to source service documentation for these units.
I currently have a plan to internally inspect the units I have to see if they can be easily modified. If modification is not easily attainable I can install a small double balanced mixer and upconvert the IF baseband signal to an unused FM frequency. I have a Marconi 2018 synthesized RF generator to use as an LO source. The Golden Eagle has room on rear for adding 3 SMA connectors for interconnection to the antenna connectors.
I have debugged the methodology of getting the baseband signal from the S-3000 tuner. Remove the FM driver tube before the discriminator and taking the signal from pin #2 for the grid.
How did I come to owning 2 Golden Eagles? I was looking for an FM HD radio/receiver for my test bench. While searching eBay for HD radios, search results turned up some broadcast monitoring receivers like the Golden Eagle. In fact several Golden Eagles. I purchased 2 for my test bench.
Best regards to all,
rca7591a
