18-05-2017, 02:20 PM
The (faulty) pager was only placed back in service on Tuesday evening/night (16th May) so is probably NOT responsible for the other issues that the RRC repeater has been suffering. I note that there has been an upswing in the digital signals visible so the question arises: is it a half (12.5KHz) channel signal getting into a wide (25KHz based) receiver at the repeater?
A search of the ACMA Public Register should show which digital repeaters are in this overall geographical area and indicate what frequencies are actually in use around here. That is not to say that it might not be local but more than likely it is. Of course, it could also be an unstable transmitter being used by someone frequently accessing a DMR or DStar repeater, a link node or other source.
A spectrum analyser or SDR-kept watch across the 144-148 spectrum might reveal a coincidence of both the 6925 repeater triggering and another digital-use frequency near its input frequency...
A search of the ACMA Public Register should show which digital repeaters are in this overall geographical area and indicate what frequencies are actually in use around here. That is not to say that it might not be local but more than likely it is. Of course, it could also be an unstable transmitter being used by someone frequently accessing a DMR or DStar repeater, a link node or other source.
A spectrum analyser or SDR-kept watch across the 144-148 spectrum might reveal a coincidence of both the 6925 repeater triggering and another digital-use frequency near its input frequency...
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.