This may be of interest for portable ops : http://www.sportsmansguide.com/cb/cb.asp?a=178616 I've had one in the past, very handy package, but I lost it :'( , so I'm ordering a replacement, its a good price ......usual disclaimers, I have no connection with the vendor or manufacturer....just a satisfied user. 72, Rich K2CPE K2 #1102