With that much time spent away from home I think he's underpaid. Usually people are compensated because they have to spend that time away from home. If he was an 8 to 5 guy that didn't travel, that salary might be in line, but he spends alot of time away from his family and deserves to be compensated for it.
That is the way we feel. If the job was even just the tri-state area we would feel it a fair salary. However, its the time spent away that we don't feel he is compensated for.
Although I really don't want to get on my soapbox about this I really think having or not having a degree is what gets you in the door of a company...from there on out your experience with the company (ex. different positions you've held), work ethic, ability to learn quickly etc. should be what determines if you are eligible for a raise or promotion. In MANY companies once you're in...the degree is irrelevant...it's all based on you as a worker at that point.
This is especially true with this company. My husband is third man in line below the Owner/Pres and the VP/Owners brother. The other employee has no degree, but has a military geological background. There have been other employees over the last 6 years, but none of them have lasted more than 1 year to 18 months because they can't handle the travel. But, none of the past employees have had a degree in Civil Engineering or Surveying experience if they held a degree at all. My DH has been the only degreed employee. He is also the Technical Accounts Manager, which means if there is any problems with the job they do at any of the locations he is respobsible for making sure it is taken care of. If that means he is working in California and there is a problem in Conneticut, then he leaves CA when he is finished with HIS job and travels to CT to fix the other persons mistake.

They value him as an employee and as a person. Its his work and work ethic that has gotten him this far. A BS or MS would not get him any higher with this company.
If I were you right now be happy he has a job when the economy improves then things should change.
We are very happy that he has a job that we don't have to worry about losing. That's why we are still there, for now.
To be honest, I would not be bringing up any salary issues right now. The sad fact is, there are probably a few dozen men who are qualified to do the same job as your DH willing to do it for less. Any salary "averages" that you can find posted right now are not going to be right. It is a new world, and a new economy.
I know it would be hard with traveling so much, but if your DH can find the time to finish his degree, he will be much more marketable once the economy turns around. Good luck to him.
His next employement anniversary is in June. We wouldn't be bringing anything up prior to then. However, there really are not a "few dozen men" lined up to his job. They have been trying to higher two people for over a year and can't find someone who either A)fits the bill or B)is willing to put up with the crazy travel.
Does he have 6 years experience or 6 years with that particular company. If he only has 6 years experience and only an associates degree. Then I say the salary is about right for your area.
He has about 10 years experience, 6 years with the current company.
That's a HUGE benefit right there.
Yes, we are very thankful for the vehicle and maintanence.
As an aside, even if your husband considered quitting and/or starting his own firm, he'd have to look closely at his contract with the company. Ohio is a difficult state to fight non compete restrictions in, and he may find himself limited in future job prospects, especially since it sounds as though his present firm has extensive geographical boundaries.
He does not have a "contract" with this company. He is a "free agent" so to speak. He has no time requirement that he has committed to them. There is no other company in America that provides the service this company does. However, some of the companies they service have started to do their own "in house" inventory surveys but it is not as accurate. They will still typically use DH's company once a year just to verify. The equipment comes from Switzerland. So its not an easy start up if we would want to start our own company.