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The NAQCC July 2022 Challenge

NAQCC Monthly Challenges are originated and information regarding rules, ideas, or suggestions go to Gary K1YAN. Email him at pix_email_k1yan (1K).
Challenge pages are constructed by Steve WB4OMM; if you see typos, please let him know! Email him at pix_email_wb4omm (1K).
Challenge results and the Challenge App (the online Challenge tracking and reporting application) is administered by Charlie N1AOK. Email him with any questions at charlie.wilber AT gmail.com
PLEASE SEND ALL CHALLENGE SUBMISSIONS TO CHARLIE!!! (If you use the online Challenge App, it will automatically send it to him).


The Trunked Radio Challenge

Trunked System(50K)


Today, with increasing demand for radio spectrum, there is a need to maximize the use of frequency assignments. If you were a company with a traditional radio system and several groups of employees, who needed to communicate only within their group, you might think about a separate frequency for each group. This would allow a group to hear only their own traffic and not unrelated transmissions. Since a typical business user spends very little time actually transmitting ( unlike we hams ) the result is a lot of dead air time across all those frequencies. In effect, a lot of wasted spectrum results.

To make things more efficient, lets add some technology with a trunked radio system. You will still need multiple channels but there can be fewer of them, the assumption being that not all groups will be active at the same time. Their use will be managed by a control system called the trunk. Users, who need to communicate with each other, are placed into talkgroups. The trunk is run by a computer system which assigns a talkgroup a channel, in real time, as needed. When the trunk hears a user become active, a data packet is sent to all members of the talkgroup telling them which channel to use. In some systems the group will stay on that channel until the conversation is done, while in others the trunk will assign a new channel for each individual transmission. In some systems ( dedicated ) the trunk will stay on one channel, while in others ( dynamic ) the trunk and the users will all change channels. For a system that changes channels with each individual transmission it is very difficult to follow the conversation without a trunked radio. This provides a measure of security and resistance to interference for sensitive communications, such as police and fire departments. The system can be setup up with priorities for the various talkgroups to help insure that the more important traffic gets through. Some systems also have an emergency button feature which insures an emergency transmission will get through immediately. So, if you are a scanner guy and having trouble monitoring some services, a trunked radio system may be the reason.
TIME FRAME:

The first day of the month 0000Z through the last day of the month 2400Z.

RULES:
Just make these words from calls of stations you work, subject to the General Challenge Rules.

TRUNKED RADIO SYSTEMS
SPECTRUM EFFICIENCY
TALKGROUPS OF USERS
PRIORITIZE USERS
EMERGENCY BUTTON

The 84 total letters and numbers contain these 20 different letters and numbers: A B C D E F G I K L M N O P R S T U Y Z

You can use each letter in a call TWICE. For example you could use K3WWP for 2 K's, 4 W's, and 2 P's.

Subsequent QSO's with the same station cannot be used for additional letters. For example, no matter how many times you work K3WWP, you can only use his call for 8 of the letters in the words.

See General Rule #5 for more details on what callsign letters can be used.

See General Rule #5 for more details on what callsign letters can be used. If you need some help with your alphabet challenge record keeping take a look at our Alphabet Tutorial page for everything from some great pencil & paper methods to fully computerized tools.


AWARDS:
A certificate and Participation Point go to everyone making all the words and submitting their report before the deadline.

A Participation Point goes to everyone making at least 1, but not all the words and submitting their report before the deadline.


PRIZES:
A choice of an item made by master woodworker Gregg WB8LZG as shown on our prizes page here goes to someone selected via a random drawing from all who participate and submit a report for this month's challenge. A person can only win once, then they become ineligible for future drawings.


LOGS:
For your report, list the words you made and the station used for each letter in the word. The number of stations listed must be the same as the number of letters in each word, even though you use the same station for more than one letter as in:

WORD - K3WWP N2OD WA8REI N2OD
NEXT - NF8M W8REI N8XMS K9EYT

(Note how N2OD is listed for both the O and D.)

You may also include comments about the challenge. Please preface any comments you want posted with "SOAPBOX:" so we will know what you want posted and what is private.

Send your results as text in the horizontal format shown above to Charlie N1AOK at: charlie.wilber AT gmail.com (You must type that address into your email program.)
Subject must read: (your call) NAQCC (month year) Challenge
For example: K3WWP NAQCC January 2022 Challenge

All entries must be RECEIVED before the 10th of the following month at 2400Z.


Results:

All the above get a certificate and participation point. All below get only a participation point.

Not eligible for a certificate or participation point for the following reason(s):
@ = Non-member
$ = QRO power

Soapbox: