Originally Posted by n2nov
Triple harmonic of 49Mhz
That was going to be my guess, but that would be a frequency of 49.425. Best I can tell from the internet is 49.800 to 49.890 is the band that kiddy-walkie-talkies use, and I believe those only put out about 100mW.
It's quite possible it's a family using Chinese radios. With Chinese radios being so cheap I wouldn't doubt that more than a few people have bought them, punched in some random frequency, and started using them as personal walkie-talkies. Several of the ads for them on eBay don't mention that any kind of license is needed to use them. Also could have been someone using modified ham gear, I've seen a few modified ham HT's on Craigslist being sold as "hunting/fishing/camping" radios, usually with 144.000 or 148.000 programmed in as the "channel" to use.
Who knows what it could have been. Maybe you can save that frequency to your memory bank and scan it and see if any more activity happens.