how long has the 311 receiver been used?

[catman60]

i'm trying to find out when they started using the 301,then when did they replace it with the 311,i know they now use the 211.

 

[papalittle]

311 came on scene in 2005 or 6.

 

[Mr Tony]

according to this chart
EKB: Receiver Comparison Chart

the 301 came out in 2001 and the 311 came out late 2003. Both are still active receivers (just activated a 311 a couple days ago for my gramma)

the differences are
311 has 8PSK tuning option...the 301 doesnt
before the card swap, the 311 had an internal card...the 301 had a card you could pull out

 

[mkmkmk13]

they r not using those for NC any more
i have been installing 211 instead, and 222K instead of 322

they only use them on DIU for some reason