IWN National Capital Region System Changes

[palmerjrusa]

The Ft Detrick site is working just fine for me. Current CC is 387.5375. Hearing channels not in the database.

Can you hear the channels currently listed in the database, i.e. Frederick sheriff dispatch, fire/emergency etc?
Those channels until recently used to be very active, e.g. you could hear all the activity from the channels that are cross-patched from the Frederick County P25 digital system.

I can still hear unlisted channels that I've found, but no activity from the channels that are actually listed.

 

[palmerjrusa]

Update!

Just picked up Fort Detrick Police (TGID 610).

I wonder if they've turned off all the cross-patched TGIDs from the Frederick P25 digital system?

 

[maus92]

Frederick Fire dispatch is not currently being simulcast on the Ft Detrick site. I can confirm that Ft Detrick Police are using their usual tg in the vlear.

 

[BM82557]

Current this morning -

Site 1.88 CC 171.5375



Site 1.98 CC 168.8250



Site 1.97 CC 172.1125



Site 1.90 CC 173.9000

 

[batdude]

here is site 89 CC 170.725



it is currently only reporting 2 freqs. 170.725 and 168.975

 

[batdude]

here is site 87, which is absolutely full scale here at Dulles Airport.

CC 171.4375 alt cc 168.975

 

[batdude]

and here is Site 85, about 1/2 scale here at Dulles.

CC 171.615 alt CC 170.9125 alt CC 170.3875

 

[batdude]

of note, these three channels are transmitting continuous 24/7 P25 data, Signal strength is strong on my end - so it's not a marginal decode problem. I would suspect these are new sites in testing/build out and not operational yet on JIWN.

168.4875 No NAC
170.3875 717
170.9125 No NAC

 

[BM82557]

of note, these three channels are transmitting continuous 24/7 P25 data, Signal strength is strong on my end - so it's not a marginal decode problem. I would suspect these are new sites in testing/build out and not operational yet on JIWN.

168.4875 No NAC
170.3875 717
170.9125 No NAC

Test signal has been broadcast for months, see this post among others -- IWN National Capital Region System Changes

 

[batdude]

Test signal has been broadcast for months, see this post among others -- IWN National Capital Region System Changes

yep, didn't see that post, sorry. I am not from here, just visiting. here is the DSD+ dump for what I saw while here. Someone else will have to nail down the Geo/Location of these... but they are all most certainly in the DC/VA area:

Site: 1.83

Channel 5-948: 173.85 CC


Site: 1.84

Channel 5-817: 172.2125 CC


Site: 1.85 NAC=717

Neighbor: BEE0A.715-1.87
Neighbor: BEE0A.715-1.88
Neighbor: BEE0A.715-1.92

Channel 5-671: 170.3875 SCC
Channel 5-713: 170.9125 SCC
Channel 5-769: 171.6125 CC


Site: 1.86

Channel 5-851: 172.6375 CC


Site: 1.87 NAC=717

Neighbor: BEE0A.715-1.85
Neighbor: BEE0A.715-1.88
Neighbor: BEE0A.715-1.90
Neighbor: BEE0A.715-1.98

Channel 5-558: 168.975 SCC
Channel 5-755: 171.4375 CC


Site: 1.88 NAC=717

Neighbor: BEE0A.715-1.85
Neighbor: BEE0A.715-1.87
Neighbor: BEE0A.715-1.92
Neighbor: BEE0A.715-1.98

Channel 5-705: 170.8125 SCC
Channel 5-763: 171.5375 CC


Site: 1.89 NAC=717

Neighbor: BEE0A.715-1.83
Neighbor: BEE0A.715-1.84
Neighbor: BEE0A.715-1.86
Neighbor: BEE0A.715-1.91
Neighbor: BEE0A.715-1.97
Neighbor: BEE0A.715-1.98

Channel 5-558: 168.975 SCC
Channel 5-698: 170.725 CC


Site: 1.90

Channel 5-952: 173.9 CC


Site: 1.91

Channel 5-742: 171.275 CC


Site: 1.92 NAC=712

Neighbor: BEE0A.715-1.84
Neighbor: BEE0A.715-1.85
Neighbor: BEE0A.715-1.88
Neighbor: BEE0A.715-1.94

Channel 5-710: 170.875 SCC
Channel 5-742: 171.275 SCC
Channel 5-850: 172.625 CC


Site: 1.94

Channel 5-952: 173.9 CC


Site: 1.97

Channel 5-809: 172.1125 CC


Site: 1.98

Channel 5-546: 168.825 CC

 

[batdude]

rough site correlation map for the DC / NCR based on all the posts.... YMMV

 

[dlwtrunked]

I thought we all knew were they are months ago (verified by site visits) and knew the neighbors:
1.83 Washington DC
1.84 Alexandria VA
1.85 Bull Run Mtn VA
1.86 Bladensburg MD
1.87 Crystal City, VA
1.88 Herndon VA
1.89 Fair Lakes (Fairfax) VA
1.90 Rockville MD
1.91 Greenbelt MD
1.92 Independent Hill VA
1.93 Jessup MD
1.94 Spring Hill (LaPlata) MD
1.95 Martinsburg WV
1.96 Paris Mtn. VA
1.98 Falls Church VA
1.99 Upper Marlboro MD
1.97 Suitland, MD

 

[batdude]

I thought we all knew were they are months ago (verified by site visits) and knew the neighbors:
1.83 Washington DC
1.84 Alexandria VA
1.85 Bull Run Mtn VA
1.86 Bladensburg MD
1.87 Crystal City, VA
1.88 Herndon VA
1.89 Fair Lakes (Fairfax) VA
1.90 Rockville MD
1.91 Greenbelt MD
1.92 Independent Hill VA
1.93 Jessup MD
1.94 Spring Hill (LaPlata) MD
1.95 Martinsburg WV
1.96 Paris Mtn. VA
1.98 Falls Church VA
1.99 Upper Marlboro MD
1.97 Suitland, MD

those tidbits have not been submitted to the RR dB (??)


doug

 

[dlwtrunked]

those tidbits have not been submitted to the RR dB (??)


doug

I simply do not have time to do such from doing such in the past.

 

[batdude]

I simply do not have time to do such.

keep in mind, I am just a visitor. I see things as "new" when maybe they aren't new - but my only reference is the current RR dB entry..... understand time... totally get it.


doug

 

[dlwtrunked]

keep in mind, I am just a visitor. I see things as "new" when maybe they aren't new - but my only reference is the current RR dB entry..... understand time... totally get it.
doug

Much is in earlier part of this thread which later diverted into an unrelated subject. I make the attached map at one point, but am not sure it reflect the final knowledge as 1.95 and 196 are not on it which I have but no time to go through and make a new image as I cannot edit that one. (I just drove 350 miles).

 

[batdude]

Much is in earlier part of this thread which later diverted into an unrelated subject. I make the attached map at one point, but am not sure it reflect the final knowledge as 1.95 and 196 are not on it which I have but no time to go through and make a new image as I cannot edit that one.View attachment 104813 (I just drove 350 miles).

your chart beats my napkin.



doug

 

[BM82557]

A submission has been made for the sites in the MD/VA/Metro DC area, when the work is completed please review and submit corrections/additions/deletions as needed. It is quite possible I have some errors in my data.

 

[dlwtrunked]

your chart beats my napkin.

doug

I was tired and forgot to save an editable version so was unable to later add the two missing ones. Normally I make mine on the back of an envelope.

 

[freqhopping]

I don't think 187 is Crystal City. It's way too strong for me and unlikely that I would receive it at all without ducting. Comparable to Dulles at ~12 miles away. Crystal City is 31 miles away.