It’s been a while since I built an amp for HF; I’d have to go back to the 60’s and a pair of the venerable 3-500z tubes that I put together back then. Time to upgrade, so I built this one.
It can accommodate almost any driving radio, and only requires 2 to 3w drive for 1kw out, a potent companion for my Elecraft KX3 and the other QRP rig I own, the FT817. But because it has a configurable input attenuator, it’s also a good match for one of the 100w radios used here, and lately that’s the FT991.
The cabinet is a bit deeper than the VHF amplifiers to make room for the large low pass filter board (the cabinet measures 12w by 6h by 16d), but still fits into the operating position with ease.
Details on the construction and performance of the RF deck are at the end of this article.
Read Full Article: Link
The amateur radio satellite LilacSat-1 (LO-90) is expected to re-enter the Earth’s atmosphere and burn-up later this month. WEI Mingchuan BG2BHC repor... Read more
Amateur Radio on the International Space Station (ARISS) has announced a “notable contribution” from the Quarter Century Wireless Association (QCWA) t... Read more
Contesting clubs in Canada and New England have joined forces to invite non-hams, new hams, and even old timers to discover HF radio in the 21st centu... Read more
Flex Radio’s Power Genius – HF Amplifier Read more
FlexRadio Systems and Marcus Roskosch, DL8MRE announced today a partnership to develop, market and sell a client interface application for both iPad®... Read more
Baofeng DM-1801 Baofeng DM-860 Dual Band Dual Time DMR slot digital / analog two way radio 136-174 / 400-470 MHz 1024 Channels Ham Walkie Talkie.1. Ba... Read more
Scott K0MD, Frederick K4IU, Byron W0BM and Vernon AC0W will be active from Turks and Caicos in CQWW DX SSB Contest 24 and 25 October 2015 as VP5S. Out... Read more
On Friday, January 24, 2020, the President signed into law: H.R. 583, the “Preventing Illegal Radio Abuse Through Enforcement Act” or the “PIRATE Act,... Read more
“Real world antenna comparisons I don’t have many choices for my antenna at my residential QTH. I have an80m OCF Dipole (aka Windom) hung... Read more
“I received my North Korea P5/3Z9DX QSL card in the mail today. I think only twenty some stations from all of North America got through and wor... Read more
Recent Posts
LilacSat-1 (LO-90) Commemorative Competition
QCWA Donation to Support ARISS Space Station Hardware Upgrade
“Discover the HF Experience” Aims to Dazzle Technicians, Newcomers
![Flex Radio’s Power Genius HF Amplifier – PGXL [ VIDEO ]](https://qrznow.com/wp-content/uploads/2020/03/PGXL2-265x168.png)
Flex Radio’s Power Genius HF Amplifier – PGXL [ VIDEO ]
FlexRadio Systems Announces Partnership With DL8MRE – APP for Iphone
Baofeng DM-1801 digital dual-channel walkie-talkie DMR Tier1 Tier2 Tier II Dual time slot digital radio Compatible with Motorola DM-860
VP5S VP5/K0MD VP5/K4IU VP5/W0BM VP5/AC0W Turks and Caicos Islands
PIRATE Act signed into law by President
Which Antenna is Better? by Richard N4PBQ
P5/3Z9DX North Korea QSL Card by N0UN
There are no ads, please add some
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2F1-kw-sspa-for-1-8-54-mhz%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
