MW/HF Software Defined Radio http://home.comcast.net/%7Ephils_radio_designs/Pocket_SDR.pdf Pocket HF SDR Cookbook http://home.comcast.net/%7Ephils_radio_designs/SDR_Cookbook.pdf RTL2832U http://home.c

Thanks for the feedback, Paul. I recreated that PDF. http://home.comcast.net/~phils_radio_designs/Science_Fair_Radio.pdf Regards, Phil

Hi everyone! I added 6 files to my site: KA321 MW voltage to frequency equation... http://home.comcast.net/~phils_radio_designs/KA321_MW.pdf KA321 FM voltage to frequency equation... http://home.comca

hi FARMERIK, i tend to keep bass engaged. i, too, am big on analog radios. the KA321 seems more analog-like with a 25-turn pot. eBay's "DE32" may contain the Si4835; but i cannot be sure. regards, phi

thank you. i would love to see Silicon Labs add SSB, too. regards, phil :) http://home.comcast.net/~phils_radio_designs/

hi everyone! i added 4 PDFs to my site: 1) Hacking the KA321 (10 pages) http://home.comcast.net/~phils_radio_designs/Hacking_KA321.pdf 2) Current Wars http://home.comcast.net/~phils_radio_designs/Curr

hi Michael, i finally released that 1.5 Volt bipolar regenerative design... http://home.comcast.net/~phils_radio_designs/DeeMitchdyneTwo.pdf and an updated single-triode regenerative plate detector...

howdy! with the PL-390 off, you press and hold "FM ST", until "OFF" is on the display. this keeps the back light off. there are no other lights. SSB is not necessary for MW, FM, or SW. it is for hams,

howdy! you're welcome. i, unfortunately, did not record the RSSI values. awesome work! Tecsun has been informed so it would be interesting to test future versions. regards, phil :)

hi Amogh, http://home.comcast.net/~phils_radio_designs/2011_SW_Guide.pdf regards, phil http://home.comcast.net/~phils_radio_designs/

thank you John! i made something similar to ETM in 2002. i controlled my R75 via the RS232 port while analyzing its audio via the sound card and FFT's i wrote in assembly. trust me, it was a lot of wo

thank you Rick! i am unfamiliar with the Laurie mod. on MW, i like inductive coupling: putting, for example, a Radio Shack (tuned) loop in close proximity to the radio. many great crystal sets use a d

hi everyone, John was just asking about FM DX. and i recently added a tiny article to my site called "PL-390 FM DX King", located here: http://home.comcast.net/~phils_radio_designs/PL390_FM_DX.pdf reg

hi Michael, i'll be working on them this month to get their write-ups out the door. regards, phil :)

you're welcome Michael. building 1AD/2AD radios is economical and fun. some of my next designs run on 1.5 volts. regards, phil :)

hi Michael, yes, the designs are located here: http://home.comcast.net/~phils_radio_designs/ this is Dave Schmarder's build-up of my Hellenedyne, with his refinements: http://makearadio.com/tube/h-dyn

hi Gary! i like the 4 kHz filter; offset-tuned by 3 kHz. yes, a slow-AGC is a big help. i agree, the DSP filters are nice. i use my PL-390 as a spotter. i am pretty hooked on designing single tube/tra

thanks Gary. guessing: the signal meter may look in a specific region for the carrier amplitude. that's how my FFT-based program, PhilSCAN, worked. regards, phil

you're very welcome. yes, they are similar. and the ergonomics beat the DE1103. the problem with some radios is the quality control. i was going to get a D96L. but Kchibo seems to lack US sellers. reg

Hi guys! Today I added 10 new article. Some may interest the group: a 2011 Portable Buying Guide, DE1103 help sheet, PL390 help sheet, an Si4831 overview, Offset Tuning the Si4734, and Si4734 Digital