Hi. I install Bell and Shaw, and it can be a pain sometimes.
I would look at a couple of things;
1. At home, which LNB do you have installed, the older Dual Satellite Quad or the new Triple Satellite Quad? BOTH satellite dishes MUST have the same LNB on them.
I assume you are the Primary Account Holder and that both receivers are on your account.
If both dishes have identical LNB's, proceed to 2.
2. If you are using the older Dual Satellite Quad LNB, there is possibility the internal switch has failed on your camping dish's LNB. To test it...
3. Install the camping 600 receiver at home, using the house dish. Does it work properly? If yes, go to 4.
4. Mark both LNB's so you don't mix them up. Remove the House LNB from your house dish, and install the camping LNB. Check your home 605 receiver. Is it working properly? Check the camping 600 receiver. Is it working properly? If not, the camping LNB needs to be replaced.
If both receivers are working fine at home, using both LNB's, then you know you may be setting up the camping dish incorrectly.
Hope this helps,