DARN defined as to mend by weaving thread across a gap that is what is being done.   Those that want to see flexibility will go with the DARN approach, as a improvement while there will be others that find it to be just annoyance.    DARN definitely fits the new Digital Analog Radio Networks.

Sometimes logic can indeed be simple (send in most potentially linkable exchange).

asterisk_bridge_link_interface

For additional details check out the new AARN-MHAL page.

URI – USB Radio Interface

• Connect two-way radio to PC
• Fast and easy!
• $$ Very low cost $$
• USB Interface – no need to open PC case
• Open source: asterisk, app_rpt
• Connect to radio’s interface connector
• Optional configuration EEPROM
• High-quality full-duplex audio
• Optional high level op-amp
• 3 User I/Os

More information is available at:
http://dmkeng.com/Products.htm

Yes! The USB FROG/OB is still around too.

usbfob.pdf

From the qrvc.com web site the following features are mentioned:

chan_usb radio contains all of the interface code to interface app_rpt to a CM108 based USB sound fob.
In addition it contains DSP code to do CTCSS encoding and decoding, squelch, pre-emphasis and soft
limiting, de-emphasis, and audio level adjustments.

Basically, you only need to make 3 or 4 connections to your radio:

• Discriminator audio, de-emphasized audio, or speaker audio.
• Transmit audio (direct to modulator, or microphone)
• PTT

A new doorway is quickly opening to continue the progression of Asterisk as the way to interconnectivity.

For more details about Asterisk app_rpt visit http://app-rpt.qrvc.com/

and information about Asterisk can be found at http://www.asterisk.org

FXS — Foreign Exchange Station

FXO — Foreign Exchange Office

An FXS device initiates and sends ringing voltage. FXS sends the voltage to an FXO device, which receives it.

The phone receiving the call is the last FXO device in the chain, and when it receives voltage from an FXS device, the phone will ring.

Connect the outside line to an FXO port on your Asterisk server to receive voltage from the outside lines.

Connect the phones to FXS ports on your Asterisk server. When the FXO module in your Asterisk Server receives the voltage, it will then generate voltage using the FXS module and send it to your analog phone.

Hint: Remember the “to”… FXS = FX(to)Station and FXO = FX(to)Office.
       With “to” representing the direction taken by the signal.

A successful operations with ARMAD, (Amateur Radio Military Appreciation Day). We placed the field station in operations together with the Huntsville finest Ham Radio Operators.

From your left to the right, yours truly, Will / W4WWM, Randy / KE4AHP, and Nate / KC4PBM. Mark / KC4OML was taking the pictures, we will have more, also James / KF4QYX was on site and tried his hand at VHF/UHF node contacts on the western reflector 9258, which is a IRLP and Echolink channel cross link. James also checked the conferences for activity and directing information when he made contacts.

We also had Karl, AI4PJ our distance control operator and his XYL (most likely XYL to become a Ham soon hi hi) helping by calling into the net and checking difference node conference for activity, his XYL, Theresa sent the information to the media about the ARMAD operations on site at Bill Heard.

The HF crew was Nate and Randy. They were burning up the net making contacts all over the place. When they finished they had 31 HF confirmed contacts.

James and I were operating on the VHF/UHF/6 meters (FM) all were tie into the two reflectors even though we got a late start we made 20 contacts. Mark keep us all on track letting us know when we miss a call are when one was coming in.m He kept us all in line. Hi Hi

Most of all we had a lot of fun setting up, operating and tearing down.
We are ready for field day operations Hooha!! Hi Hi

Also, we would like to thanks Harlie (KB4CRG) for the use of the wide coverage VHF/UHF system. We where able to work both node with out a hitch. Good job on the linking it all work out just great!

73

Will / W4WWM

This is the place to go for support.