FLex-1500 ATU

G4NRT

Richard McClelland, AA5S

I used a Dentron Jr. Monitor tuner with my Flex 1500 for several years.  Worked great, except that it doesn't auto-tune.  The Elecraft KAT-500 works well with the Flex-1500 with the caveat that you'll need a small amplifier to get at least 10 watts into the tuner in order for it to auto-tune.  Neither of these tuners may be what you are looking for due to their size.  You can find more detail about the Dentron Junior Monitor here: https://outbackofbeyond.wordpress.com/2015/12/19/dentron-jr-monitor/  Maybe others can offer suggestions about smaller antenna tuners than these two.

David-N5PSM

Richard McClelland, AA5S

The KAT-500 sometimes auto-tunes on 5 watts but if the tuner memory hasn't been set and the tuner needs to do a full auto-tune, the auto-tune won't commence unless I turn on the amplifier.  Once I kick start the auto-tuning with the amplifier, I can immediately turn it off and the tuner completes the auto-tune.  I've had the KAT-500 for five years or so, maybe I should update the firmware and see if the auto-tune performance has been improved with a subsequent update.  

Andrew VK5CV

Dudley WA5QPZ

Richard McClelland, AA5S

I didn't know that.  I have a delta loop that I can't match on the low end of 80 meters, I think I'll give it a go without the tuner and see what happens.

G4NRT

Many thanks to all those who kindly responded. I’ll give the T1 a whirl first I think as it is so compact. 73! 

David-N5PSM

Sounds Like a good plan,  I have been working with a Flex6300 from a hotel room since 2013.  I use a Balun Designs 9:1 UnUn and a long wire (26 AWG ) out the A/C vent.  56 Countries.

Phil N3ZP

When I owned a Flex-1500 I used an LDG Z-11Pro II tuner, It has very wide range and can be run on AA batteries by installing a battery holder. It tuned my 43 ft vertical and also worked with various wire antennas for Field Day. 

Dudley WA5QPZ