ICOM ic-2720 APRS应用设置 [复制链接]

10.1长假期间，仔细阅读英文说明书，发现ic2720经过设置后数据发射和语音信号可以互相独立工作，设置方法如下：
1.按住[set lock]并同时开启电源，进入初始设置模式
2.用[set lock] 或[low prio]找到“pac”（数据包操作段）选项，用调整旋钮（左边）调整修改为“r”或“l”
3.如果要修改数据传输速度，找到“bps”项，根据需要 选择“9600”或“1200
”
4.关闭电源，保存设置
5.再次开机，根据你“pac”的设置在左边或右边写入aprs频率

两段可以同时工作吗?像8800只能单段工作,如果切换到语音段,aprs就不会发射了。

dr-635可以不？

'

两段可以同时工作吗?像8800只能单段工作,如果切换到语音段,aprs就不会发射了。

'
经设置后，2720切换到语音段，aprs（数据包）那边继续发射，所以不用你来回切换了

'

dr-635可以不？

'
没有八重洲和艾琳可的双段双显机器试验，所以不清楚

说明ic2720设计时就考虑到数据传输

什么叫同时发射？

'

什么叫同时发射？

'
我哪里说可以同时发射？上面清楚地说语音和数据两边独立工作。还有提醒一点：主信道那边优先

2720的福音呀

我的2720就是这么用的，左边设为语音段，右边设为数据段，2720的主信道无论设置在左或右，右边数据段均可由外置tnc控制，可实现自动发射信标，除非手咪ppt被按下正在发射，这时无论主信段设置设置在左或右，用手咪发射时都能能传送语音，但在右段信标发射停止。我的理解手咪ppt的优先权大于data口的或叫语音优先权大于数据。而不是什么主信道优先。

ft8900能不能也这样用。

8900不行

这个消息要顶~~~~~~~~~~~~~

2720要在aprs中焕发青春了

看说明书好象是可以的。

说明书上是这样说的。

'

说明书上是这样说的。

'
你用过就明白了,使用时得在pkt和语音来回切换,不是很方便

8900的中文翻译上漏了一个注释“数据发送段总是在主段”，27#菜单设定的是数据的接收段

看到这标题想起我以前收集的一个关于2720 aprs的资料，发上来e文好的高手看看：
aprs and packet radio




the icom ic-2720h does an excellent job of supporting aprs / packet and voice simultaneously with its dual band capability.


tom webb, wa9afm/5 provides these tips on using your ic-2720 for aprs and packet:

it is possible to run aprs / packet and voice with the 2720.

the 'left' panel needs to be selected as 'main' band,  

you must select the 'right' side of the panel for packet (initial set mode actions, see page 62 in manual);

this will force packet to the 'sub' band on the right.

voice operations will be on the 'main band' on the 'left'.


set the packet speed for 9600 baud (see page 69 in manual). this will accomplish three things;

the mike will be muted during packet transmissions and thus, you won't have to unplug it.

during voice operations, data transmission will be suppressed and voice will have priority;

flashing 's1' will appear in the lower right corner when transmitting on voice.

**note: you can still run 1200 baud packet -- the 9600 baud setting enables the 'dual mode' option.


i use the byonics tinytrakiii. (but this should follow for other tnc's)

using the mini-din 6-pin connector, the cable doesn't require data out

(* you will need to use data out for 9600 baud or the af out for 1200 baud -
there are two audio outputs -- choose the one for your baud rate *)

续上篇：
if the ttiii is powered up before the 2720 the yellow cd light will come on steady.  
when the 2720 is powered up, the cd light will go off and only come on when a signal is detected.




you will get de-sensing on voice from the aprs transmissions, but it's a fair tradeoff as you're using one radio and antenna. i've been using this configuration for several weeks with great success

* see p. 62 for details on how to toggle data speed between 1200 (afsk) and 9600 bps (g3ruh, gmsk).