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 Post subject: HARDROCK160
PostPosted: Thu May 23, 2019 5:29 pm 
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Joined: Mon Mar 06, 2017 12:19 pm
Posts: 15
It would be great to have a 160 watt version of the Hardrock50, with internal ATU, in kit form. That would boost the RS-HFIQ, and any other QRP rig, the FCC legal limit of 15dB gain. I know of no one that offers such a product. Any thoughts Jim? I have my checkbook ready.


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 Post subject: Re: HARDROCK160
PostPosted: Fri May 24, 2019 5:37 am 
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Joined: Mon Jul 23, 2012 6:25 am
Posts: 1142
Hi Bryan,

If you are on the HobbyPCB email list; stand-by. At Dayton this year we introduced the Hardrock-500 amplifier support package. With the Hardrock-500 you can build a 5W in, 500W out amplifier.

As you point out, it would be illegal for HobbyPCB to build and sell a 500W amplifier that only required 5W drive because of the FCC rule limiting amplifiers below 30MHz to 15 dB gain. But it's not illegal for individual hams to build their own.

This is where the Hardrock-500 comes in. For an introductory price of about $1200 the Hardrock-500 provides everything you need to build a 500W amplifier; case, power supply, power control, lowpass filters, protection circuitry, control board with dual color LCD touchscreens, heatsink, heat spreader, temperature controlled fans. Everything you need, except the RF deck.

The Hardrock-500 can accept multiple RF decks like the Motorola EB-104, Microsemi AN-1819 or others available from various sources. The amplifier decks vary in cost but are typically about $300. The Hardrock-500 will be available with a blank heat spreader/ heatsink for you to drill and tap depending on your amplifier or pre-drilled for the AN-1819, which uses a pair of VRF-2933's running at 58-60V. Microsemi has released the design files for the evaluation board and we will work with a supplier to make sure that these boards are available on Ebay.

The Hardrock-500 is a self contained (no external power supply) compact amplifier measuring ~ 7"H X 7.5"W X 14"D weighing less than 18 lbs. with the AN-1819 amplifier, it will produce 400-500W output on 80-10M running on 110VAC. With a little more drive 6-8W, running on 220VAC, it will easily get to 500W output. Not bad for a $1500 investment.

It currently supports every transceiver that the HR50 does and has a frequency sensor to automatically select the band. Later we will add an input attenuator to work with 100W transceivers and an internal ATU. The HR500 also has a 13.8V @ 2A output to power a QSP transceiver.

You can see a photo of the prototype here: https://www.dropbox.com/s/m0dqvbc0pe0jz49/IMGP5398.JPG?dl=0

We are looking into having the case anodized black.

73,
Jim WA2EUJ


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 Post subject: Re: HARDROCK160
PostPosted: Fri May 24, 2019 11:04 am 
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Joined: Mon Mar 06, 2017 12:19 pm
Posts: 15
Where do I preorder? My checkbook is standing by!


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 Post subject: Re: HARDROCK160
PostPosted: Wed Jun 26, 2019 11:08 am 
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Joined: Mon Jul 31, 2017 4:41 pm
Posts: 7
OMG! ... I must have one of these! Please put me on the mailing list when its available!


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