Master Control Talkgroups are a special breed of non-voice Talkgroups

Page Contents

• Introduction
• How do I use MCTs to perform tasks?
• Related FAQs
• Master Control Talkgroup Tables
  • PNW-A
  • PNW-D
  • PNW-E
  • PNW-S

(🆘 Need help? If you have questions not answered on this page, or a TG is not responsive, please contact tech@pnwdigital.net.)

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Introduction

What are Master Control Talkgroups (MCTs)?

Master Control Talkgroups (MCTs) are special talkgroups on the PNWDigital network that enable you to turn off or turn on all other networked talkgroups on the PNWDigital repeater on which you are communicating. 

What’s an example of when I would want to use a MCT?

Having an uninterrupted QSO on your preferred talkgroup can be challenging when other users are periodically transmitting on different talkgroups using the same timeslot. However, our repeaters have a powerful feature to help you control the chaos: Master Control Talkgroups (MCTs).

By briefly keying up on the MCT assigned to your talkgroup’s timeslot, you can temporarily turn off or disable access to all* other talkgroups on that timeslot for the next 15 minutes. This leaves the repeater clear for your exclusive use during the length of your QSO.  (Bear in mind that other users on this same repeater can be affected by your use of MCT’s and vice versa.)

For example, say you want to use the Cascade1 TG but there is occasional interfering traffic on the PNW1 TG, which shares the same timeslot. Simply initiate a quick transmission (kerchunk) on the MCT for timeslot 1 to disable PNW1 as well as any other talkgroups on timeslot 1. Now you can enjoy your QSO on Cascade1 without conflicts.

Each repeater timeslot has its own MCT that can be used in this way. So whether you need to use Timeslot 1 or Timeslot 2 talkgroups, keying up on the respective MCT will turn off all other talkgroups on that timeslot for 15 minutes – giving you conflict-free airtime.

How do I use MCTs to perform tasks?

1. Use the tables below to find the MCT Talkgroup ids for your repeater, timeslot, and whether you want to turn the talkgroups on or off. For example, looking at the PNW-A – c-Bridge Managers – Bremerton  –  pnw-a.pnwdigital.net table below, I find my repeater, “Issaquah WA – E. Tiger VHF”, and the TS 1 Off column to get the MCT ID: “16770031” 
2. Program the selected MCT ID into your radio on timeslot 1 using your preferred programming method.
   (note: all MCTs TX on timeslot 1 even if they control timeslot 2 talkgroups.)
3. Then briefly keyup (kerchunk) that MCT. 
4. Once you do this, all* other talkgroups on the repeater will be turned off for 15 minutes.  
   (Note: If another user keys up during that period on another TG, it will enable that TG for 3 minutes, if it is a Push to Talk (PTT) TG,  or simply turn it back on if it is a Full time (FT) TG.  No other TG’s are affected and the 15 minute timer continues to run until it ends.)

Tips for radio with MCTs

1. Don’t wait for an opening
   If you wish to turn off a TS 2 talkgroup(s), you may not need to wait for an opening, just Ker-Chunk as you are TX’ing onto TS1, not nearly as busy as TS 2 (if TS 1 is busy, you will get bonked of course).  
2. Sort your zones
   Sort your zones so that the MCT’s are in the middle to cut down on the thumbing or place MCT off in multiple places in your zone (beginning, middle and end; 3 times)
3. Limited channels per zone in Radio?
   Up to 4 channels may be needed to control both timeslots on a repeater.  If your radio is limited to 16 channels per zone, you may wish to skip MCT’s or add a second or third zone for a particular repeater to make room for the MCT’s as well as the additional talkgroups that are supported on the PNWDigital.Net repeater managers (the c-Bridge).
4. Local 1 and Metro 2 can be Mini-MCT Off’s
   These 2 talkgroups have a 5 minute hold-off for all network traffic. The timer is shorter, but using these means you do not have to add the MCTs to your radio.  

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Related FAQs

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Master Control Talkgroup Tables

PNW-A – c-Bridge Managers – Bremerton  –  pnw-a.pnwdigital.net

Manager	IPSC Network Manager (PNW-A)	Status / Notes	TS 1 On	TS 1 Off	TS2 On	TS2 Off
02  03-04	Event Repeater – SeaPac, Valley Camp	Normally Disabled	16771031	16770031	16771042	16770042
03 05-06	Issaquah WA – E. Tiger VHF		16771051	16770051	16771062	16770062
04  07-08	Bellevue – Cougar VHF		16771071	16770071	16771082	16770082
05  09-10	Winthrop – Riser Lake		16771091	16770091	16771102	16770102
06  11-12	Mazama – Fawn Creek		16771111	16770111	16771122	16770122
09  17-18	N7ER (HLO)	Reserved	16771171	16770171	16771182	16770182
12  23-24	Bellevue – Seattle; Cougar, E Tiger		16771231	16770231	16771242	16770242
14  27-28	Tacoma – Baldi Mtn – UHF		16771271	16770271	16771282	16770282
15  29-30	Tacoma – Ruston		16771291	16770291	16771302	16770302
16  31-32	N7MOT		16771311	16770311	16771322	16770322
17  33-34	Spare	Spare	16771331	16770331	16771342	16770342
18  35-36	North Bend – Valley Camp		16771351	16770351	16771362	16770362
20  39-40	Shoreline – Shoreline		16771391	16770391	16771402	16770402
21  41-42	NO7RF	Reserved	16771411	16770411	16771422	16770422
22  43-44	Ocean Shores – Ocean Shores		16771431	16770431	16771442	16770442
23  45-46	Back-up Manager for PNW-A	Normally idles	16771451	16770451	16771462	16770462
24  47-48	Bellingham VHF – Lookout		16771471	16770471	16771482	16770482
25  49-50	Shelton – Shelton		16771491	16770491	16771502	16770502
27  53-54	MMDVM – West	Single Slot	16771531	16770531	NA	NA
28  55-56	Oso – Frailey (removed, may return)	Out of Service	16771551	16770551	16771562	16770562
29  57-58	W7NCX	Reserved	16771571	16770571	16771582	16770582
30  59-60	Olympia – Capital Peak		16771591	16770591	16771602	16770602
31  61-62	Oregon – Salem	N7MAQ	16771611	16770611	16771622	16770622
33  65-66	Tulalip – Tulalip		16771651	16770651	16771662	16770662
34  67-68	GAFS	Admin Test Manager	16771671	16770671	16771682	16770682
35  69-70	Bellingham – Lookout Mtn UHF		16771691	16770691	16771702	16770702
36  71-72	Kelso / Longview		16771711	16770711	16771722	16770722
37  73-74	Seattle – Metro Area		16771731	16770731	16771742	16770742
38  75-76	Issaquah – East Tiger UHF		16771751	16770751	16771762	16770762
39  77-78	Ariel – Areal Mtn		16771771	16770771	16771782	16770782
40  79-80	MMDMV – Ted – Alt	Backup	16771791	16770791	16771802	16770802
41  81-82	Boistfort – Baw Faw (SW Washington)		16771811	16770811	16771822	16770822
42  83-84	APRS-D Gateway	Reserved	NA	NA	NA	NA
43  85-86	MMDVM – Demi	2-Slot server	16771851	16770851	16771862	16770862
44  87-88	Tacoma – Baldi 220 Mhz	220 MMDVM Repeater	16771871	16770871	16771882	16770882
45  89-90	Audio Stream	Streaming Server	16771891	16770891	16771902	16770902
46  91-92	Tacoma – Baldi VHF and 900 Mhz		16771911	16770911	16771922	16770922
47  93-94	Seattle DMR – Link	Link	NA	NA	NA	NA

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PNW-D – c-Bridge Managers  – Kennewick  –  pnw-d.pnwdigital.net

Manager	IPSC Network Manager (PNW-D)	Status / Notes	TS 1 On	TS 1 Off	TS2 On	TS2 Off
01  01-02	I-84 14 Future	I-84 Group	16771011	16770111	16771022	16770022
02  03-04	Hood River – Mount Defiance	I-84 Group	16771031	16770031	16771042	16770042
03  05-06	Trout Lake – Flattop Mtn	I-84 Group	16771051	16770051	16771062	16770062
04  07-08	Government Camp – Mt Hood	I-84 Group	16771071	16770071	16771082	16770082
05  09-10	Hillsboro – Saddle Mtn	I-84 Group	16771091	16770091	16771102	16770102
06  11-12	Boardman – Golgatha Butte	I-84 Group	1677111	16770111	16771122	16770122
07  13-14	Hood River – Burdoin Mtn	I-84 Group	16771131	16770131	16771142	16770142
10  19-20	Cascade Locks – Cascades Locks Hill		16771191	16770191	16771202	16770202
11  21-22	Biggs Junction – Juniper Point	I-84 Group	16771211	16770211	16771222	16770222
12  23-24	The Dalles – Stacker Ridge	I-84 Group	16771231	16770231	16771242	16770242
13  25-26	Portland – Westhills	I-84 Group / AARG	16771251	16770251	16771262	16770262
14  27-28	Corbett – Lookout Point	I-84 Group	16771271	16770271	16771282	16770282
15  29-30	Gresham / Hospital	I-84 Group	16771291	16770291	16771302	16770302
16  31-32	Portland / Mt Scott	KA7AGH	16771311	16770311	16771322	16770322
17  33-34	IPSC Demo – Test	Statewides FT	16771331	16770331	16771342	16770342
18  35-36	Portland – PPMC		16771351	16770351	16771362	16770362
19  37-38	Powell Butte – Powell Butte	HiDARG	16771371	16770371	16771382	16770382
20  39-40	WA7HAA	Testing	16771391	16770391	16771402	16770402
23  45-46	Back-up Repeaters		16771451	16770451	16771462	16770462
24  47-48	Yakima – Elephant Mtn		16771471	16770471	16771482	16770482
25  49-50	MMDVM – Rex	Oregon 2 slot	16771491	16770491	16771502	16770502
26  51-52	Polly-Audio Test		NA	NA	NA	NA
27  53-54	MMDVM – Wes	Single slot only	16771531	16770531	NA	NA
28  55-56	W7NCX	Testing	16771551	16770551	16771562	16770562
29  57-58	Tri-Cities – Jump Off Joe UHF		16771571	16770571	16771582	16770582
30  59-60	Tri-Cities – Jump Off Joe VHF		16771591	16770591	16771602	16770602
31  61-62	Prosser – Hrse Faven Hill		16771611	16770611	16771622	16770622
32  63-64	Williamette Valley	SRA	16771631	16770631	16771642	16770642
33  65-66	Prineville – Prineville	OARA	16771651	16770651	16771662	16770662
39  77-78	VU Meter		NA	NA	NA	NA
40  79-80	MMDVM -Ned	NCS	16771791	16770791	16771802	16770802
42  83-84	MMDVM – Peter		16771831	16770831	NA	NA
43  85-86	APRS-D Gateway	KF7EEL	16771851	16770851	16771862	16770862
44  87-88	Brush Prarie		16771871	16770871	16771882	16770882
45  89-90	IPSC-MMDVM – Test	PTT Only	16771891	16770891	16771902	16770902
46  91-92	ISPC-MM-Open – Test		16771911	16770911	16771922	16770922
47  93-94	MMDVM – Otis	Oregon	16771931	16770931	16771942	16770942
48  95-96	IPSC-MMDVM	WB7AWL	16771951	16770951	16771962	16770962
49  97	MMDVM – Bridget	1-Slot	16771971	16770971	16771992	16771992
50  99	MMDVM – Suzy – Alternate	1-Slot	16771991	16770991	16701002	16700002

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PNW-E – c-Bridge Managers  – Spokane – pnw-e.pnwdigital.net

Manager	IPSC Network Manager (PNW-E)	Status / Notes	TS 1 On	TS 1 Off	TS2 On	TS2 Off
02  03-04	Allentown PA	DCI	16771031	16770031	16771042	16770042
13  25-26	Lewiston ID – Craig Mtn		16771251	16770251	16771262	16770262
14  27-28	Saint Maries ID – Saint Marie		16771271	16770271	16771282	16770282
15  29-30	Coeur d’Alene – Blossom Hill		16771291	16770291	16771302	16770302
16  31-32	Spokane – Krell UHF		16771311	16770311	16771322	16770322
17  33-34	Spokane – Krell VHF		16771331	16770331	16771342	16770342
18  35-36	Spokane – Lookout Point		16771351	16770351	16771362	16770362

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PNW-S – c-Bridge Managers  – Seattle –  pnw-s.pnwdigital.net

Manager	IPSC Network Manager (PNW-S)	Status / Notes	TS 1 On	TS 1 Off	TS2 On	TS2 Off
02  03-04	Allentown PA (future)	DCI	16771031	16770031	16771042	16770042
05  09-10	Winthrop VHF		16771091	16770091	16771102	16770102
06  11-12	Mazama VHF		16771111	16770111	16771122	16770122
09  17-18	Pateros – Goat Mtn	Future	16771171	16770171	16771182	16770182
10  19-20	Wenatchee – Lil Badger & Pateros		16771191	16770191	16771202	16770202
12  23-24	Ellensburg – Sun East VHF		16771231	16770231	16771242	16770242
13  25-26	Lewiston ID – Craig Mtn	Future	16771251	16770251	16771262	16770262
14  27-28	Saint Maries ID – Saint Maries	Future	16771271	16770271	16771282	16770282
19  37-38	Moses Lake – Frenchman Hills		16771371	16770371	16771382	16770382
20  39-40	Ephrata – Beasley Hill		16771391	16770391	16771402	16770402
22  43-44	Spokane Valley – Ridgecrest VHF		16771431	16770431	16771442	16770442
38  75-76	Moses Lake – Frenchman Hills UHF		16771751	16770751	16771762	16770762
41  81-82	Wrightwood CA – Wrightwood	IRG	16771811	16770811	16771822	16770822
42  83-84	Orange County CA – Santiago Peak	IRG	16771831	16770831	16771842	16770842
43  85-86	Blue Ridge Mtn, California	IRG	16771851	16770851	16771862	16770862

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First Published: September 9, 2021 Last Updated: 1 year ago by Mike – NO7RF

Views: 2653