ARES EC Publication March 2016

EMCOMM-Letterhead-1-113x65

EC Report for March 2016

 

 

Hi All,

This month’s schedule was rather relaxing, it was a clone of last month: 4 Monday Night EmComm Nets, 1 EmComm l meeting, 1 EmComm and Coffee, and a public service event plus a Radio Workshop.

Radio Workshop

We are still holding Radio Workshops to assist our members and nonmembers alike solve problems and get assistance with anything Amateur Radio related. The last workshop was held March 15th, and 6 people showed up. We worked on getting our laptops brought up to speed with the latest updates for FlDigi and some of the logging programs. Also Richard (KE6SHL) helped some of us streamline our newly upgraded Windows 10 computers. This is a great workshop for the new hams that haven’t had a lot of experience on the bands. So come one, come all and join us at our next workshop.Our next workshop will be Tuesday April 12, 2016 at 18:30 Hr.

Public Service Calendar 2015

Most of you know we help CARP doing Public Service events. We use them for training; they help keep us sharp handling traffic and working under a net condition. I am including the calendar of events as it is now.

 

2016 Public Service Events:

CARP

  • April 2 – Cal. Classic Ride
  • April 9 – March of Dimes
  • April 30 – Shinzen Run/Walk
  • May 7 – Kirch Flat Ride
  • September ? – (date TBD)

If interested in volunteering at any of the above events, contact Rob Mavis
(ae6ge@k6arp.org) .

Newbee Net or IntroNet

Lew Roberts (KI6YWX) has launched a new net held on Tuesdays at 19:30. As most of you have heard Lew is leaving us to relocate to Arizona in the next few days. He has disbanded the net for the lack of interest. Very few new hams checked in and when it came time to find someone that might be interested in taking over Lew had no luck. 

Build Project

            “Easy Digi Kit” interface project with Lew Roberts (KI6YWX) has been suspended. This is due to the fact that he is leaving Fresno this week. He has gathered the parts that were still on order and has handed them off to Dan Pruitt (AE6SX) for distribution. Contact Dan and you can pick up your parts. Lew is in the process of putting the final instructions on paper and will email them to us when he gets settled. At that point we can setup a build session at The Salvation Army Citadel and complete the project.

Cross Band Repeat

The subject at the March meeting Chris Johnson (KJ6OUG) gave a presentation about Cross Band Reaping. This is a very interesting and useful tool for the box. We are planning to have a training session where we can set our radios up and practice. I barrowed some information off  the internet that may help you understand how it works.

 

Crossband Repeater Operation
Craig LaBarge, WB3GCK

[The information provided here was originally compiled for use by the Chester County (PA) ARES/RACES organization. — Craig]

SIMPLEX CROSS-BAND REPEAT OPERATION

Operational Scenario:

A dual-band mobile rig capable of being configured as a simplex cross-band repeater (CBR) can be a useful tool during CCAR activation or public service events where net operations are being conducted on a 2 meter simplex frequency. The CBR effectively translates back and forth between a 2m simplex channel and a 70cm simplex channel. Thus, a low-power 70cm HT can work through a mobile CBR station to communicate with a 2m simplex net, taking full advantage of the mobile rig’s hi-power capabilities. Any dual-band or dedicated 70cm HT can be used to operate through a CBR.

Some situations where CBR operation may be useful:

  1. A net operator needs to be on foot away from the mobile rig. With the mobile rig configured as a CBR, the operator can communicate with the 2m simplex net using a low-power 70cm HT.
  2. A parked mobile station configured as a CBR and located on high ground can be used to provide a 70cm simplex link into low-lying areas with poor simplex coverage.
  3. Using a low-power 70cm HT, an operator located deep within a building can operate through a mobile CBR in the parking lot to communicate with the 2m simplex net.

Mobile Rig Configuration:

There is no common setup for all manufacturers. Consult your owners manual for instructions for your specific radio. The following procedure is based on the Yaesu FT-8100:

  1. Power on to set up.
  2. VFO or MR mode
  3. Set the VHF frequency to the net 2-meter simplex frequency. Set the PL tone to 103.5, if being used by the CCAR net.
  4. Set the UHF frequency to 446.15 MHz. Set the PL tone to 103.5, if being used by the CCAR net.
  5. Main or Sub-band designation is not required. The radio will automatically respond to the strongest signal on either band.
  6. Set the power to the lowest setting required for reliable communications with the 2m net.
  7. Power off the radio.
  8. While pressing the RPT button, power on the radio.
  9. Release the RPT button when the radio is operational. A small icon may appear to the left of the frequency display to indicate that the CBR function is active.

HT Configuration:

  1. Set the HT for 446.15 MHz simplex.
  2. Set the PL tone to 103.5 if being used by CCAR for the net.

Caution: When more than one CBR is being used within a net, interference may be encountered. Make sure each CBR is configured to use a different 70cm simplex frequency. Coordinate your choice of frequencies with the Net Control Station to avoid interference to the net.

RANGE EXTENDER OPERATION

Operational Scenario:

Also known as One-Way Cross Band Repeat, the range extender mode can be used when an HT has insufficient transmit power to bring up the CCAR repeater during an activation or public service event. In this mode, the mobile rig is configured as a one-way simplex repeater, receiving a 70cm simplex signal and retransmitting it out on the CCAR 2-meter repeater’s input frequency. The HT monitors the CCAR 2-meter repeater output frequency directly. Thus, to set up in this configuration, an HT capable of operating on both 2-meters and 70cm simultaneously is required.

Mobile Rig Configuration:

There is no common setup for all manufacturers. Consult your owner’s manual for instructions for your specific radio. The following procedure is based on the Yaesu FT-8100. The procedure is similar to that of the Simplex-to-Simplex CBR mode with the following modifications:

  1. The CCAR repeater’s input frequency, 146.340 MHz, should be set up as the Main Band.
  2. 446.15 MHz should be set up as the Sub-band.
  3. To bring up the radio in the one-way repeater mode, press and hold RPT and CNTRL simultaneously while powering up the radio.

HT Configuration:

  1. Set 446.15 MHz as the main band.
  2. Set 146.940 MHz as the Sub-band. Note: This is the CCAR repeater’s output frequency. You will be monitoring the CCAR repeater’s output directly.

Caution: When more than one CBR is being used within a net, interference may be encountered. Make sure each CBR is configured to use a different 70cm simplex frequency. Coordinate your choice of frequencies with the Net Control Station to avoid interference to the net.

LEGAL CONSIDERATIONS
Before setting up a cross-band repeater capability, make sure you are familiar with the FCC regulations which govern repeaters and “remote bases.”  To make these operations fully compliant with FCC regulations, there are a few points which need to be considered.  Two of the major requirements are discussed below..

Station Control

The FCC requires that a repeater be under the control of an operator who controls the repeater and can intervene in the event of a problem.  Control can either be local (i.e., “the use of a control operator who directly manipulates the operating adjustments in the station to achieve compliance with the FCC rules”) or remote (“the use of a control operator who indirectly manipulates the operating adjustments in the station through a control link to achieve compliance with the FCC Rules”).   In the scenarios described above, the user is likely to be within fairly close proximity to the CBR and able to directly monitor and control it.  In this case, the CBR could be considered locally-controlled, satisfying the station control requirements.

Station Identification

An unattended station needs to be identified on all frequencies on which it transmits.   When the user identifies on the UHF uplink, the CBR is also identifying itself on the VHF side.  However, many radios do not have the capability in CBR mode to identify on the UHF downlink (transmit) side (or the VHF side, for that matter).   Additionally, when another operator transmits on the UHF uplink, the CBR won’t be correctly identified on the VHF side, either.  So, depending on your radio, some sort of add-on device for automatic identification may be required for full FCC compliance.

EmComm Website

We are now posting events and meetings on the calendar as well as posting articles on the home page. Check us out at fcemcomm.org.

 

Net Control Staff Needed

We are looking for volunteers to take a turn as net control on Monday nights. This is not a difficult task. We will provide the preamble and net roster. This is a great way to enhance your skills running a net for emergency situations. If you are interested, please contact Gary (KI6OYW) at 559-269-1340 or email g_greenberg@att.net

Our Calendar

Don’t forget the Monday Night EmComm Net at 19:30 hr. on the 147.15 MHz Pl 141.3. We have some good information and camaraderie. On the third Friday of the month there is the EmComm Coffee at YFC on Cedar south of Ashlan in Granite Park at 07:00hr. And last but not least the EmComm Meetings are held on the Fourth Thursday of month. The next meeting will be held April 28th at 1900 hr. at the Salvation Army Citadel at 1854 Fulton St., Fresno.

Best of 73’s

GLEN CAINE (N6HEW)

Fresno County RACES Officer

Fresno County ARES EC

559-999-7590

N6HEW2@gmail.com