I think you had said you were going to test the MFJ-1899T at some point.
I remembered I had one in a bin so I pulled it out, went to the local park and did some FT8 as my radiation test. All of the PSK reporter screen shots (below) are using the 1899T at 8 watts from my IC-703. I was pleasantly surprised at how well it did plus I was able to work several POTA folks from Texas to NY on voice still at 8 watts.
I used my AX-1 with all of the same parameters and the 1899T had a slightly better footprint but spent most of the time using the MFJ today. I didn’t have a lot of time because the inter-galactic union of park mower dudes found out I was coming and of course had to mow this afternoon – go figure. I know you have the same problem. I guess that makes them really QRM(owers.)
I like to protect my whip antennae so I use 200 psi (thinner wall that the 400 psi) pvc pipe and end caps to store and protect while out and about with the whips.
I put a piece of pool noodle type foam in the end caps as a shock absorber. After set up the 1899 whip tube will fit inside of the 1899 base tube. The chameleon whips are in 3/4″ PVC, the 1899 whip is 1/2″ with the 1899 base in 1″ PVC. I thought I’d pass that little tidbit along in case you find it useful. The price is right and can be found at your local antenna emporium such as Lowe’s or Home Depot.
The black item under the home made antenna mount in the photo above is a QRP 1:1 balun by timortiz, N9SAB on eBay. He has several QRP antenna models which looks like Chameleon may be picking up his design in their pocket series?
Maybe you can help with this one – I have been looking for something like a used stroller’s collapsible shade to keep the sun off a rig and laptop when used on a picnic table while allowing air circulation. A manufactured sun shade would look more “professional” and deliberate than the traditional card board box at field day, etc. Ideas?
Randy – KJ4UBM
Thank you for sharing your MFJ-1899T results with us, Randy. And many thanks for the tips including the size of PVC you use to store your verticals. A brilliant and affordable solution!
I have started experimenting with the MFJ-1899T and will be posting a video in the next week or so. I’m still getting to know this antenna and, especially, sorting out how to reliably match impedance in the field without an ATU.
You’re right about the N9SAB & Chameleon. They’re working together on the new pocket series antennas which are (as I understand it) the same N9SAB designs, but he builds them with Chameleon antenna components (ie Kevlar antenna wire, etc.). I should be getting one in due time to evaluate in the field.
Regarding tabletop shade, try searching for a “laptop tent.”
I’ve got a friend that does video work that often requires editing on site outdoors. He has a portable laptop tent–his is somewhat reflective and allows for airflow–keeping sunlight off of his screen and his laptop much cooler than it would be exposed to the sun. Here’s an Amazon search showing a few different models (affiliate link), but look around on the Internet for a number of options.
Also check out this previous post by Don (W7SSB). He’s been happy with a number of pop-up shade options, but mostly larger ones.
Readers, if you have other suggestions for Randy, please consider leaving a comment and links!