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
SAMCOM Mini Mobile Radio 218 Key Specifications Frequency Range V:136.000MHz-174.000MHz V:220.000MHz-248.000MHz U:400.000MHz-470.000MHz System F3E(FM)... Read more
Getting Ready To Setup and Operate Your First Ham Radio Station as a New Technician Class Operator! By Don Butler, N4UJW Hamuniverse.com Read Full A... Read more
RSGB welcomes the recent Ofcom consultation document on control of interference which invites responses by 16 February. The RSGB EMC committee ... Read more
These Revisions work on all Flex 1500, 3000, and 5000 SDR ham radio transceivers. Features vary with Model as noted in the Revision history link below... Read more
This application allows Amateur Radio Operators to browse and search their Logbook of the World (LOTW) QSL confirmations on their handheld de... Read more
The just-ended Heard Island VK0EK DXpedition logged more than 75,000 contacts, but the under-the-radar, contemporaneous VK0LD operation also put a new... Read more
Here’s a window into today’s solar activity: Starting at 00:00 UTC, and ending at 11:22 UTC on May 5, 2015, this video reveals a new sunsp... Read more
Plug & Play Auto Tuner Plug & Play! You won’t even know it’s there . . . MFJ-939I/K/Y automatically tunes your antenna as you tune your radio.... Read more
By Diana Eng “One of my favorite things to do is talk with other ham radio operators through satellites or the International Space Station (ISS)... Read more
The Amateur Radio Emergency Service (ARES) will phase out the traditional ARES report forms later this year in favor of an online system called ARES C... Read more
Recent Posts
SAMCOM Mini Mobile Radio 218
Getting Ready To Setup and Operate by N4UJW
RSGB interference consultation response
![PowerSDR 2.7.2 – Software Defined Radio [ DownLoad ]](https://qrznow.com/wp-content/uploads/2017/01/Mystery_12530khz-265x168.jpg)
PowerSDR 2.7.2 – Software Defined Radio [ DownLoad ]
N1KDO’s LoTW Look – Android
The “Other” Heard Island DXpedition — VK0LD
What’s Coming on the Sun: May 5 2015
MFJ-939I PLUG,PLAY,200W AUTOTUNER, HF – Plug & Play Auto Tuner
Listening to Satellites with a Homemade Yagi Antenna
Amateur Radio Emergency Service Transitioning to New Online Reporting System
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
