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The BW is a function of the diameter of the radiator and Q of the matching network. The inherent, narrower BW of the 5/8, results in higher gain lobes at the horizon.

That idea was used widely in military and marine applications.

Nothing you can do. If you need more BW, buy a different antenna. You could try soldering a 50 ohm resistor across the feedpoint. That should give you all of the BW you could ever want.

What is your <2:1 BW now?

same radio, different name.

Cable, I have both analog and digital. Things can be said about one or the other, but when looking at some of the things we do, at times, I prefer the analog. My digital scope was making me nuts last week, I was ready to throw it out the window. Had to get on the analog and I was good. Mine...

Pull the device and grab the screw with pliers or needle nose vise grip

Is the FT-991 not hybrid?

Can one still get a Hilberling?

You will have more luck on eBay. There are several radio dismantles that sell board level parts.

Why at least 100 MHz O'scopes are cheap these days in the used market.

Why at least 100 MHz?

Winter time, is when the clunkers come out. We have random clunker nights on 16 LSB in my area. Preferably 23 channel SSB radios, but some 40 CH's come on. The activity has dwindled dramatically since Covid lockdown resolved, but a few come around. In the past 2 months, I have dragged out the...

I robbed the final and heatsink, VCO, audio amp chip and crystal filter. I believe it has a bad mixer IC also. I know I stashed the heatsink somewhere and the crystal filter did nt get used and I know where it is. I'd have to come up with a VCO and audio amp chip and bottom cover. Probably not...

Same here, I like when these threads take on new life. It was fun! 73 and Merry Christmas to ALL! SuperLid

I have a 79-892 I used on 10m back in the day. It became a parts donor. I just picked it up and looked at it to see what it needs to operate again. Might not happen...I loved that radio in my car. No amp, Larsen mag mount and I could work JA's from the East Coast, during the cycle peak in the...

Oh, wait, you said 40 CH

What model? I believe the 13-892 is identical to the Hy-Gain 674B

In the photo, you can see the DDS is on 23.710. That injection freq is putting the radio on CH 38.

I am on 16 LSB several times a week, as well as 36-40 with the DDS. These 23 channel Cybernets were great radios, I don't care what some people think or say.