08-05-2023, 07:57 AM
Welcome back
Those SMA labels date back to the mid-1980s to mid-1990s, the repeater based on FM828 transceiver/s typically the same era when converted for repeater use. It is likely the diecast boxes with the coax connectors on the end contain a transmitter in one, a receiver in the second, as well as the unmodified separate FM828 unit.
The box with the LN, HN and ANT labelling is for a diplexer/duplexer so that only one antenna is required, the LN is the lower frequency port, the HN is the higher frequency, ANT is antenna. https://en.wikipedia.org/wiki/Duplexer
i've got to admit that using the N-male plugs pushed into BNC sockets is not a good practice for a remote facility !
There is so much corrosion evident that nothing there has any value.
Doug
.
Those SMA labels date back to the mid-1980s to mid-1990s, the repeater based on FM828 transceiver/s typically the same era when converted for repeater use. It is likely the diecast boxes with the coax connectors on the end contain a transmitter in one, a receiver in the second, as well as the unmodified separate FM828 unit.
The box with the LN, HN and ANT labelling is for a diplexer/duplexer so that only one antenna is required, the LN is the lower frequency port, the HN is the higher frequency, ANT is antenna. https://en.wikipedia.org/wiki/Duplexer
i've got to admit that using the N-male plugs pushed into BNC sockets is not a good practice for a remote facility !
There is so much corrosion evident that nothing there has any value.
Doug
.
Doug VK4ADC @ QG62LG51
http://www.vk4adc.com
This Forum is only going to be as interesting as the posts it contains.
If you have a comment or question, post it as it may trigger or answer the query in someone else's mind.
http://www.vk4adc.com
This Forum is only going to be as interesting as the posts it contains.
If you have a comment or question, post it as it may trigger or answer the query in someone else's mind.