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> HF Circuits
Topic Title Topic Starter Replies Views Last Action
No New Posts   Sagem Rm-540-u (406-470mhz)
need a bit more info..
gremlinsa 4 218 June 25, 2014
Last Post by: gremlinsa
No New Posts   Dust Iron Vs Ferrite
kellys_eye 8 641 February 15, 2014
Last Post by: kellys_eye
No New Posts Got Me A Sdr   12
Geek 43 2,490 February 04, 2014
Last Post by: Nothing40
No New Posts   Pint Fueled Q Of The Week
TC upper frequency?
Jimthecopierwrench 7 359 February 03, 2014
Last Post by: Sch3mat1c
No New Posts   Electronics Now! December 1996
Seeking A Specfic article and 2 followup
Techowl 11 1,673 January 12, 2014
Last Post by: CWB
No New Posts   Simple Bpf Vs Cavity Filter
Fovakis 10 723 October 12, 2013
Last Post by: Fovakis
No New Posts   Down Converting An Rf Cw Signal And Then Back Up
FM modulating a CW signal
jomac 3 541 October 07, 2013
Last Post by: Sch3mat1c
No New Posts   Weird Signal I Can't Identify
Skeith 5 620 September 26, 2013
Last Post by: Geek
No New Posts   Circuit To *create* Speaker Interference
Dr.Mentalist 15 8,504 August 23, 2013
Last Post by: Geek
No New Posts   Megawatt Pulse Generation
The Observer 20 2,853 August 10, 2013
Last Post by: OpenLoop
No New Posts Pmr446 Transmitter
Where can I find it!
Robert Moyse 4 859 August 08, 2013
Last Post by: CWB
No New Posts   Dsp Nominal Signal Level For Audio?
Fovakis 0 729 June 28, 2013
Last Post by: Fovakis
No New Posts   X Ray Weapon.
FBI claims credit for vaporware
johansen 5 840 June 21, 2013
Last Post by: Geek
No New Posts   Receiver's Noice Input =k*t*bweq ?
Fovakis 4 842 June 13, 2013
Last Post by: Fovakis
No New Posts   Rf Attenuators In Mixer's Input Port
Fovakis 0 730 May 28, 2013
Last Post by: Fovakis
No New Posts   Wireless Camera Driving Circuit And Mems
Camera Integration Transmission and Rec.
mekitron 2 902 May 26, 2013
Last Post by: mekitron
No New Posts   I&q Modulator Questionss
Fovakis 7 970 May 24, 2013
Last Post by: Fovakis
No New Posts What Synthesizer I Need?!>
Fovakis 23 1,087 May 19, 2013
Last Post by: Fovakis
No New Posts   Morse Code Communication Using Fm Frequency
StrawberryBro 6 1,558 March 19, 2013
Last Post by: Geek
No New Posts   A Frequency Synthesizer Using A Pll For An Undergr
Funkymix89 0 1,170 February 28, 2013
Last Post by: Funkymix89
No New Posts   Ne602 - Calculating Input Bandpass Filter
atferrari 4 1,421 February 23, 2013
Last Post by: Geek
No New Posts   Rf Comunicatin Modules
priestnot 4 1,571 January 04, 2013
Last Post by: gremlinsa
No New Posts   Wasn't Someone Looking For An Rds Decoder A While
back?
Geek 1 1,022 December 20, 2012
Last Post by: CWB
No New Posts   We Haven't Had A Radio Thread Here In A While
Yup, about that time again
Sch3mat1c 18 2,747 November 18, 2012
Last Post by: Sch3mat1c
No New Posts   Rf Humming During Cell Phone Call
mega_processor 9 1,961 November 11, 2012
Last Post by: Geek
No New Posts   Long Range Data Transfer (wireless)
mega_processor 19 2,303 November 10, 2012
Last Post by: mega_processor
No New Posts   Broadband Pre-amp Circuit Needed.
machine 3 1,644 September 23, 2012
Last Post by: machine
No New Posts   Power And Gain Relation
mega_processor 8 1,896 September 17, 2012
Last Post by: mega_processor
No New Posts   Radio Scanner
Unlocking locked bands.
Skeith 2 2,077 September 11, 2012
Last Post by: Skeith
No New Posts   Electronics Now Spectrum Analyzer
Spectrum Analyzer
Rickr123 4 2,000 August 18, 2012
Last Post by: kellys_eye
No New Posts   Wireless Data Communication
robert111 7 1,672 July 09, 2012
Last Post by: telomere
No New Posts   Single Transistor Mixers And Biasing
BEEEEES 1 2,619 June 28, 2012
Last Post by: Sch3mat1c
No New Posts   Licence Revalidation
for UK amateur operators
kellys_eye 9 2,217 April 06, 2012
Last Post by: tekwiz
No New Posts   Variable Capaictor.
how many watts?
Skeith 7 1,746 March 15, 2012
Last Post by: tekwiz
No New Posts   Ft200 Power Supply
kellys_eye 15 2,607 March 09, 2012
Last Post by: CWB
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