Just go to http://soldersmoke.com. On that archive page, just click on the blue hyperlinks and your audio player should play that episode.
http://soldersmoke.com
I'm making slow but steady progress on this one. The origin of the project was the beautiful National HRO dial and gearbox that Armand WA1UQO gave me. I decided to use a 455 kHz IF because; 1) That was the IF of the old HRO receivers (the ones that won WWII) 2) I had a nice TOYO CM455 crystal mechanical filter that would be good for SSB. 3) I figured it would be easy to add in a wider filter that would be good for AM shortwave listening. 4) I like to keep the IF below the frequency of the VFO. The wide filter turned out to be harder than I thought, but I think I have finally achieved the selectivity I was looking for.I'll have a switch on the front panel that will allow me to go from "AM-Wide" to "SSB Narrow." The switch will change the filters and the detectors, and will turn the BFO on and off.
Still to do: I need a high-pass filter to knock down RFI from nearby AM broadcast transmitter. And an RF gain control would be nice.
I'm really glad Radio New Zealand is there. It provides welcome relief from the shortwave fire and brimstone. Radio Romania is also doing a fine job on shortwave.
Alan: I've been listening to their on 7425 kHz broadcast to the Pacific, in the morning. You can see the schedule in the link below. Unfortunately they change freqs and times from week to week -- this early morning broadcast ends on 29 Oct. So give them a listen this week before they go away!
Only one "nearby AM broadcast transmitter"? How 'bout a series-tuned L-C 'notch'? Or with a bit of ingenuity a series-parallel "L" or "T" notch? Could be a separate (more versatile) unit. That would leave the rest untouched ...
Instrument storage boxes updated
-
While getting some equipment off a shelf I knocked some thing down and they
landed on a nanoVNA, cracking the screen.
I think it is time to make some ...
2021 - The Year of Nostalgia. A 60 Year Trip
-
A 60 Year Time Trip!
Starting with Today (2/22) -- The N6QW Conversion of the Dentron Scout HF
SSB.
2/27/2021 --- Strange Happenings!
I am working on t...
Hunting For NDBs In CLE265
-
*WC - 332 White Rock, BC*
It's almost* CLE* time once again! '*CLE*'s are '*C*o-ordinated *L*istening
*E*vents, and NDB DXers around the world focus...
A Personal Milestone: Published on Paper
-
As far back as I can remember, I have had a fondness for words and
language. Even in the second grade, learning the roots of words, their
suffixes and pr...
Mt Feathertop (VK3/VE-002) 11th Jan 2021
-
Mt Feathertop (1,922 meters) is the second highest mountain in south
eastern Australia (Victoria), and according to many commentators, the most
picturesque...
Yet more new AVRs
-
In a previous blog I mentioned the new atmega4809 and AVR128DA parts. Well,
it seems I missed two other new families, the AVR128DB and AVR128DD series.
I’v...
Re-engineering my 1st “Shirt-pocket” transceiver
-
When the project of building a very small transceiver was accomplished 4
years ago, I still lacked lots of skills in setting up electronic circuits
using S...
The Complete DXer
-
Odds are that, if you're reading this, you're probably familiar with two
other jewels from the ARRL bookstore: *Solid State Design For The Radio
Amateur...
-
A Simple Speech Processor
(For QRP/SSB Homebrew Transceivers )
Over the last few weeks I had been thinking to build a small AF speech
processor to add to...
Modifications to the Dayton/FDIM-2019 Antuino
-
The Dayton Antuino has sub-optimal performance. This is a short note on
improving it to an 80 db range of measurements. The trouble with Antuino
2.0 (the o...
A New Look for your uBitx!
-
Adding a "Cool Blue" Display to your uBitx!
The standard "green background" with black lettering frequently reminds me
that I suffer from Chronic seasicknes...
Very FB!
ReplyDeleteWhat time and frequency?
ReplyDeleteAlan: I've been listening to their on 7425 kHz broadcast to the Pacific, in the morning. You can see the schedule in the link below. Unfortunately they change freqs and times from week to week -- this early morning broadcast ends on 29 Oct. So give them a listen this week before they go away!
Deletehttp://www.radionz.co.nz/international/listen
73 Bill
THANKS for posting the podcasts!
ReplyDeleteOnly one "nearby AM broadcast transmitter"? How 'bout a series-tuned L-C 'notch'? Or with a bit of ingenuity a series-parallel "L" or "T" notch? Could be a separate (more versatile) unit. That would leave the rest untouched ...
ReplyDelete