GRBAlpha - How to use digipeater or DNxD - 12. To use DNxD

DNxD is the "Delayed Needronix Digipeater".

A normal digipeater responds immediately after you transmit your message to a repeater like as I mentioned in this blog just before. (See "GRBAlpha - How to use digipeater or DNxD - 11. To use digipeater".)

DNxD is different from that. "Delayed" in the name means you can set the delay time that your message will be transmitted after you send it.

It is very easy to use DNxD system. You only add "@xxx " ("@", 3 digits, and a space; "xxx" are 3 digits how many minutes you want to transmit your message after you upload it.) in the beginning part of your message.

When you want to send your message after 90 minutes, prepare your message like as "JI1IZR>CQ:@090 Hello from Japan, my GL is PM95pi". 

GRBAlpha replies "OM9GRB-8>JI1IZR:Your message will be retransmitted in 090 minutes, thank you for using Delayed Needronix Digipeater (DNxD)!" when GRBAlpha catches your message.

After 90 minites, GRBAlpha will transmit a message like as "JI1IZR>CQ,OM9GRB-8:@090 Hello from Japan, my GL is PM95pi". This message will be transmitted 3 times with 1 minute interval.

I recommend you that you include your Grid Square Locator in your DNxD message as a receiver of your message can caluculate how long delay he/she needs to set in his/her DNxD message in the response message for yours.

Please notice that the DNxD keeps only 1 message. If someone has already uploaded a message in DNxD, you will get a response from GRBAlpha like as "OM9GRB-8>CQ:Delayed Needronix Digipeater (DNxD) is busy for next 001min(s). Try later." 
when you transmit your DNxD message.

Even when DNxD is busy, you can use normal digipeater on GRBAlpha.