Kitted and Offered For Sale By The Four State QRP Group
Designed by David Cripe, NMØS
Click photo for Larger Image
If your receiver is plagued with 60/120 cycle buzzing in your shack or favorite portable QTH, the BUZZ-KILL will save your sanity.
From the creative mind of NMØS, the BUZZ-KILL is a special audio filter that removes 60 cycle noise and all of its harmonics, beating them down 40 db or more - it kills the buzz!
If you have been suffering with bad line noise QRM, this add-on audio accessory will make ALL the difference in your rig's reception.
Similar in concept to the Hi-Per-Mite, it is a drop-in AUDIO filter/AUDIO amp with configurable gain.
This filter is unique - it is not a noise blanker.
Instead, it has a notch at 60Hz and at _every_ harmonic of 60Hz, so it will completely null all the power line frequency hum and buzz that plagues the HF bands, it's just gone! ALL THROUGH HOLE parts ensure an easy build, there are NO SMT parts.
This is a compact, flexible design that can be used as a stand-alone outboard unit, or it can be easily integrated into an existing receiver (see manual for details).
It's onboard audio amp is capable of driving a speaker or headphones.
Gain is constant from 100 Hz to 5kHz, so it can be used with any CW, SSB or AM receiver.
Employ this filter and your 60 cycle woes will disappear !
A quantity discount is available for Club and Group builds, 5 kit minimum order required please.
Contact the kitter at the email address at the bottom of the page for more info.
Specifications and Design Features
Signal Gain:
0 dB or 20 dB, user selectable
Audio Power:
500 mW into 8 ohms, from 9v supply
Bandwidth:
100 Hz to 5 KHz, with notches every 60 Hz
Max Input Signal:
5.0v p/p
DC Power:
7 to 13 VDC at less than 75 mA
Altoids Compatible:
Perfect for SOTA and /P operations.
Easy Build:
Nice sized pads and traces make
soldering easy. NO SMT parts.
NO Toroids:
There are no toroids to wind.
PCB:
High Quality, blue solder mask,
two sided 2.6" x 1.7" printed circuit board
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Note to Canadian Purchasers:
Due to high bank processing fees,
we can no longer accept Canadian Money Orders.
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If paying by check or money order (US $ only)
please make it out to "Four State QRP Group" in the
amount of $42.00 for each kit purchased,
and mail to:
Four State QRP Group
Johnny Matlock ACØBQ
379 23rd Road
Lebo, Ks 66856
The Buzz-Kill is carefully kitted and shipped by
Johnny Matlock, AC0BQ and Pam Matlock
Please direct shipping, kit, and part related questions to Johnny Matlock
All proceeds are applied toward funding OzarkCon. Thank you for supporting The Four State QRP Group.
The files
and images on this site unless otherwise noted are copyright by the
Four State QRP Group and may not be published or used without
permission.
