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RF Communications Equipment for Sale

RF Amp

Mini-Circuits ZHL-5W-1A

Mini-Circuits ZHL-5W-1A RF amp covers 5 MHz through 500 MHz with 40 dB of gain. It has a 4 dB noise figure, and can output 37 dBm of power at 1 dB compression. It has a quite respectable 47 dBm of OIP3. For power, it requires 24 VDC at 3.3 Amps.

I have these models with and without the necessary heatsink. For just $350 you can have as many of the non-heatsink amplifiers you could possibly use, or for $390 I'll drill and mount one-or-more on heatsinks. (plus the shipping of course)

These units are brand-new, unused, purchased from a government sale. Mini-Circuits gets $1258.68 for one of these, and that is without the heatsink!

Spec sheet: ZHL-5W

250 Watt Dummy Load

Bird Termaline Model 8141

I have several of these dummy loads. One measures 57 Ohms and has a damaged but usable, N connector. This one with the damage is $20. Another measures 53 Ohms, no significant damage, but has been banged around quite a bit. I'll take $35 for that one. The rest measure 50 Ohms, are used, but in decent shape and are $65 plus the shipping.

These handle 250 Watts continuously, and 500 Watts intermittently. To get a kW CW, and full legal intermittantly, 4 units can be combined, and I just happen to have a kilowatt rated 4-way combiner also for sale. (not shown)

Well, finally after several years I have sold all of these dummy loads.

4 foot Dish antenna

This dish antenna with feed is about 4 feet in diameter. The feed is WR34 with a choke horn feed, and has a waveguide-to-SMA launcher at the bottom end. It was designed for backhaul communications at 26 GHz. I have two like this one shown, and another with a huge shroud to suppress sidelobe radiation.

Scroll down in this sub-window to see additional views of this antenna.

The feed is a question mark from WR34 waveguide with a choke horn at the business end. The brazed-on tube at the end is a support which is clamped into the dish at the front surface of the dish by an X-crossmember.

I can let this amazing antenna go for $250. It would be difficult to ship, so local pickup in the San Francisco Bay area is preferred.

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