Work HF antenna and 6-Meter Yagi Simultaneously on FLEX-6500

Mike W8MM · May 2014

I've seen a few questions about simultaneously monitoring or working HF and 6-Meters with a FLEX-6500. Typically this involves some HF antenna (Tri-bander?) and a 6-Meter Yagi.

It's pretty easy to use an HF/6-meter duplexer to connect both antennas to a single antenna port on the 6500. Now, one can enjoy having different panadapters open on 6, 10, 12 and 15, all receiving and displaying band activity. The Comet CF-360B duplexer seems just right for this duty.

The only drawback is not being able to fully use the internal antenna tuner for transmitting through the duplexer into a poorly matched antenna. This setup works very well for both transmit and receive barefoot into low-vswr antennas.

It can even be used to feed separate KW amps (one for HF, one for 6) which might have their own internal tuners. A simple SPDT switch feeding the keying line to either KW PA solves the keying issue.

Ken - NM9P · May 2014

I have that duplexer, bought for exactly this purpose while anticipating arrival of my 6500 last august, but never got the six meter squalo up. I plan to get it done this weekend!

Ernest - W4EG · May 2014

Thank you Mike,

Never thought of doing that: I will integrate the duplexer for multi bands operation.

Now the only thing I wish is that Flex add eight antenna input for each slides on my F-6700! LOL

philip.theis · May 2014

6700 does this seamlessly, it's beyond 2 bands that becomes the switching challenge, but we'll get there when we get data out of the I2C
Fun getting ten bands or more into the XVTR port

Work HF antenna and 6-Meter Yagi Simultaneously on FLEX-6500

Comments

Leave a Comment

Categories