I wanted to start a thread about the LCN finder. I took my HP-1EE to the local sports arena (Oakland Coliseum) to try and map out an LTR used by the facility. The last time I tried mapping out an LTR system, I used one of the techniques here:
Mapping an LTR System - The RadioReference Wiki
Anyway, I have some questions and concerns about how the feature works.
What data is used to determine LTR LCN order? From the articles, 'home' channels are easy to find. How are 'goto' channels determined?
Is there anyway to save a system where not all of the LCN's have been determined?
In the example in the users guide, there is a SAVE dialog that pops up once all LCNs have been determined. During the analysis phase, there are soft keys for 'End' and 'Save'. The 'Save' is always greyed out.
Consider a case where you are trying to determine the LCN order of a system where you are unsure of all of the frequencies. The LCN finder will never finish. So it would be useful to save the current work in progress. Without a save, you have to manually write down all of the LCNs found up to that point…
Would it be possible to allow a save before all LCNs are found? Ideally, it would save all of the found LCNs and mark the other LCNs in some way that would let you know they were never found.
Another request is to simplify modification of an LTR system. Consider a mythical system with three frequencies:
LCN 1: 460.100
LCN 2: 460.200
LCN 3:460.300
But you have them programmed reverse in the radio as:
LCN 1:460.300
LCN 2:460.200
LCN 3:460.100
In the edit site menu, all you see is:
460.3000
460.2000
460.1000
...they are not necessarily in LCN order. They are in the order in which they were programmed. So you press the '460.3000' button. Press the 'next' to get to the LCN entry. It shows a 1. You try and enter a 3, and it tells you that there is a duplicate LCN.
I know LCN's can't be duplicated. But since I can't duplicate during data entry. And since I can't see the LCN's from the entry screen, there is no way to know what order to edit the system to get the LCN's right.
When I was trying to do this in the field, I gave up and just created a new system from scratch. It worked for what I was doing. But it would have been less desirable, if I had a large number of TGIDs I wanted to save from the original system...
Mapping an LTR System - The RadioReference Wiki
Anyway, I have some questions and concerns about how the feature works.
What data is used to determine LTR LCN order? From the articles, 'home' channels are easy to find. How are 'goto' channels determined?
Is there anyway to save a system where not all of the LCN's have been determined?
In the example in the users guide, there is a SAVE dialog that pops up once all LCNs have been determined. During the analysis phase, there are soft keys for 'End' and 'Save'. The 'Save' is always greyed out.
Consider a case where you are trying to determine the LCN order of a system where you are unsure of all of the frequencies. The LCN finder will never finish. So it would be useful to save the current work in progress. Without a save, you have to manually write down all of the LCNs found up to that point…
Would it be possible to allow a save before all LCNs are found? Ideally, it would save all of the found LCNs and mark the other LCNs in some way that would let you know they were never found.
Another request is to simplify modification of an LTR system. Consider a mythical system with three frequencies:
LCN 1: 460.100
LCN 2: 460.200
LCN 3:460.300
But you have them programmed reverse in the radio as:
LCN 1:460.300
LCN 2:460.200
LCN 3:460.100
In the edit site menu, all you see is:
460.3000
460.2000
460.1000
...they are not necessarily in LCN order. They are in the order in which they were programmed. So you press the '460.3000' button. Press the 'next' to get to the LCN entry. It shows a 1. You try and enter a 3, and it tells you that there is a duplicate LCN.
I know LCN's can't be duplicated. But since I can't duplicate during data entry. And since I can't see the LCN's from the entry screen, there is no way to know what order to edit the system to get the LCN's right.
When I was trying to do this in the field, I gave up and just created a new system from scratch. It worked for what I was doing. But it would have been less desirable, if I had a large number of TGIDs I wanted to save from the original system...