# Presentation: 679119

## NAT NPX138N VHF-FM RadioPart IBriefing on General Use and Settings

- DEWG CAP
- 5/23/00

**NAT** **NPX138N ****VHF-FM Radio****Part I****Briefing on ****General Use ****and Settings**

**Ver. 1.0**

## How to Navigate this course

- In order to allow you to get the most out of these aids,      you’ll be afforded the ability to move forward at your        own pace.  You’ll know it’s your turn                         to go forward in the presentation                           when you see this button

- Page Up                   or      **NEXT**

- This presentation has animation sequences to help demonstrate the way some things work

- Press any key once you see this.  The space-bar works great as an “any key”.  If you want to replay animation, use the Page Up key on your PC, and press any key to  restart that part

**Go ahead and try this on your own:**

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- This presentation has animation sequences to help demonstrate the way some things work

## Good!

**Good!**

**We’re now ready to proceed to the training**

## This is the NPX-138 radio from Northern Airborne Technology, Ltd of Canada which has been designated as CAP’s aircraft VHF-FM radio of choice.

- This is the *NPX-138* radio from Northern Airborne Technology, Ltd of Canada which has been designated as CAP’s aircraft VHF-FM radio of choice.

-  **FAA accepted for aircraft  use**
** ****100 channels within the 138-174 mHz VHF spectrum**
** “****Guard” (priority) channel monitor capability**
**  ****Programmable from laptop computer in the field**

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## Introduction

- Otherwise, you may go to the Channel Display by lightly toggling  the BRIGHTNESS switch, also labeled “NEXT”, either direction.

- “HELP”

- ...if you want to search the built-in tutorials, you can                     press the white button marked “help” at this time.

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- “NEXT”

## Introduction

- The position of the EDIT switch governs the way in which the other switches operate. This is a pull-type lockout toggle switch

- DON’T move this until you cover Part II, Advanced Training on field program options and scanning

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***Display, Channel, and Brightness.***

- The EDIT switch centered, the function of the other chief toggle switches are as labeled above them:

## Introduction

-  *Main Volume* - Adjusts receiver volume
-  *Display Type* - Changes display mode

- Some of the more obvious controls are right here:
-  *Main Volume* - Adjusts receiver volume
-  *Display Type* - Changes display mode

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- Some of the more obvious controls are right here:
-  *Main Volume* - Adjusts receiver volume
-  *Display Type* - Changes display mode

-  *Channel Select* - Choose the channel you want
* **Brightness* - Adjust the screen brightness

-  *Channel Select* - Choose the channel you want
-  *Brightness* - Adjust the screen brightness

* **Channel Select* - Choose the channel you want
-  *Brightness* - Adjust the screen brightness

## Introduction

* **Scan Select* - allows scanning or no scanning
-  *Guard Channel Volume* and *Guard Select* - allow use of second receiver circuit on a Guard frequency

-  *Scan Select* - allows scanning or no scanning
-  *Guard Channel Volume* and *Guard Select -* allow use of second receiver circuit on a Guard frequency

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## Introduction

- There are two possible screen readout types to observe, and you may use which ever you prefer:

- This “Alpha-Numeric” readout..........

- Operating the Radio

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- ..........Or this “Frequency” readout.

- Operating the Radio

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## The DISPLAY switch lets you choose the display mode.  

- The DISPLAY switch lets you choose the display mode.

** **Display Switch to the left shows the ID Display

- Operating the Radio

-  Switch to the center is the Receive Display.  This is the actual receive frequency for this “channel”

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## Operating the Radio

** **Switch to the right is the Transmit Display.  The TX and RX frequency will most often be the same in airborne communications  ** **

- Exceptions will arise.

** **See the number to the right of the RF frequency.  This is the subaudiable tone, or CTCSS tone which is programmed for that channel

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-  You recall from ROA training that a “channel” is comprised of  1) a radio frequency, and 2) a subaudible note, or tone, which rides underneath the voice audio and opens up other radios’ receivers
-  The tone for this channel is 100 cycles, or Hertz

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##        This is your preferred,  typical view screen.

** **In the interest of safety and confusion avoidance, it’s recommended that the radio is left in......

** ...****this ID Display condition**

**     ...****this ID Display condition**
**       **This is your preferred,  typical view screen.

**...****this ID Display condition**

- This screen shows everything one really needs to know while in the air:
-  The Channel, as known on our other VHF-FM radios

** **The** **normal use or tasking for that channel

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- Operating the Radio

## Getting Started

- Operating the Radio

** **Power display - HI = 10 Watts,  LO = 1 Watt
-  HI Power would be the normal setting

-  CTCSS Tone On or Off
-  “ON” would be the normal setting

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## Operating the Radio

-  Notice that we didn’t specify the means for  changing the variables such as tone, power, etc

-  Once this radio is installed and programmed, it should just power up and operate “as is”

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## Operating the Radio

-  Part II, the Advanced User segment of this training series will cover the specifics of changing the options for tone, power, and other matters

-  These functions need not be altered in any way, as long as the display reads as just specified

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## Operating the Radio

-   Here’s an overview of the other chief functions:

-  On/Off and Volume - Traditional function and purpose

-  Squelch - Push in to hear the weakest of signals

-  Channel - Pick the channel of operation desired

-  On/Off and Volume - Traditional function and purpose

-  Squelch - Push in to hear the weakest of signals

-  Channel - Pick the channel of operation desired

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## Operating the Radio

-  If one considers just this much, the NPX-138N works     just like any other VHF-FM radio

-  Turn on, set channel, adjust volume as required

-  Set display mode and screen brightness

-  Set aircraft comm panel as necessary

-  Turn on, set channel, adjust volume as required

-  Turn on, set channel, adjust volume as required

-  Turn on, set channel, adjust volume as required

-  Set display mode and screen brightness

-  Set display mode and screen brightness

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## Operating the Radio

-  If one considers just this much of the radios operation, it works just like any other VHF-FM radio

-  Leave the scan select on NORMAL, or centered

-  Leave the scan select on NORMAL, or centered

## Operating the Radio

-  If one considers just this much of the radios operation, it works just like any other VHF-FM radio

-  Leave the scan select on NORMAL, or centered

-  Press in the Squelch button to hear very weak signals

## Operating the Radio

-  If one considers just this much of the radios operation, it works just like any other VHF-FM radio

-  Leave the scan select on NORMAL, or centered

-  Change channels as required during mission

-  Change channels as required

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## Operating the Radio

-  Set the Guard Volume Control counterclockwise to it’s lowest setting for now

-  Set the Guard Volume Control counterclockwise to it’s lowest setting for now

-  Switch the Guard Channel Select to channel 1 or 2 depending upon the needs of your local Command

-  Switch the Guard Channel Select to channel 1 or 2 depending upon the needs of your local Command

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- “So, just what is this ‘Guard Channel’ feature, anyway?”

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## Imagine your radio is actually  --

- 2 radios in one!

-  You could work one channel while listening to another

-  You could go “off frequency” with a ground team, and still catch a call on your primary channel from Mission Base (or from another air crew or ground team)

-  You could be doing work with another agency on their channel,  and still receive a CAP mission alert

-  You could answer these calls without switching the dial

-             Here’s how to use the Guard feature:

-  National F-1 and F-4 are default programmed as GD1& GD2

-  Use the Guard Select switch to choose which guard channel to monitor - the repeater or the air-ground frequency

-  Leave the SCAN switch in NORMal mode for now

-  Set the Guard Volume to a desired level

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-  Use the Guard Select switch to choose which guard channel to monitor - the repeater or the air-ground frequency

-  Use the Guard Select switch to choose which guard channel to monitor - the repeater or the air-ground frequency

##  Choose your other operating channel with the CHANnel switch, in the common fashion for channel selection

-  If you hear a call and the lamp immediately to the right of the regular on-off-volume knob lights up, then that was on the regular channel as indicated on your display

-  Answer that call in the regular fashion, you don’t have to change or move anything on the radio to do so

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##  If you hear a call and the lamp just to the right of the Guard Channel (GD) knob lights up - 

-  If you hear a call and the lamp just to the right of the Guard Channel (GD) knob lights up - then you would:

-  Adjust the GD Volume if necessary for good audio

-  Change the SCAN/NORM switch to the bottom setting, which is labeled “GD TX” - Guard Transmit

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-  Change the SCAN/NORM switch to the bottom setting, which is labeled “GD TX” - Guard Transmit

-  Change the SCAN/NORM switch to the bottom setting, which is labeled “GD TX” - Guard Transmit

-   All transmissions from you will now go out over the Guard Channel you selected with the switch GD1/GD2

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##  Once all Guard Channel traffic is cleared, you would -

-  Revert back to normal operation by switching the SCAN/NORM switch back up to where it was before

-  Continue normal operations

-  Adjust Main and Guard volumes, as necessary

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-  It should be pointed out that Guard Channel/Regular Channel co-monitoring is no different than the way we use the aircraft aviation band comm radios... You can hear traffic on either one, but they both have their own volume  and TX controls

-  Simply set the NPX-138N’s two volume knobs as needed & answer either “radio” by means of the NORM - GD TX switch

-  Guard Volume has a preset minimum volume level

-  Guard Volume has a preset minimum volume level

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## Operating the Radio

-           ... **And that’s it !!**
- So, Let’s review just once more on the important stuff:

- Final Practical Review

-  _Toggle the switch labeled “BRIGHTNESS”/”NEXT”_

-  We know we need to see a channel display of one kind or the other, so we can use the radio.

- -  You see this “HELP” screen, so you would do what in order to get past this screen and on to business?

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## Final Practical Review

-  _Toggle the switch labeled “DISP”, for “Display”_

- - You can display the Channel by Frequency or by it’s “name” or common usage.  Choose this how?

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## Final Practical Review

-  _Use the Guard switch, choose GD 2 for CAP-4, _
- _ __& you’ll hear calls on either frequency_

-  We’re asked to go off to another channel to assist an outside agency on a mission or work a ground team

-  How do we keep an ear out for Mission Base as well?

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## Final Practical Review

-  _This switch all the way down, and speak to them_

-  ....and so you’re on your agency assist and you hear a call from another CAP airplane on GD 2, which you know is CAP’s Channel 4

-  What’s the fastest, easiest way to answer them?

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## Final Practical Review

- Conclusion

- That’s it!

-  Now that you’ve seen this, the radio owners manual  should be reviewed -- *while you’re sitting in front of the radio *if possible

- There’s absolutely no substitute for hands-on field experience
-  Try these basic steps while you’re on the ground, so that they become second-nature when you’re in the air

## This is the end of the Introductory Level Briefing on the basic useof the NPX138N from NAT, Ltd

- This is the end of the Introductory Level Briefing on the basic useof the NPX138N from NAT, Ltd

- Continue with the Advanced User Briefing to learn to use Scanning, Priority, and Direct Frequency or Channel Editing

## Slide 33