Serving the worldwide community of radio-electronic homebrewers.
Providing blog support to the SolderSmoke podcast:
http://soldersmoke.com
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Just go to http://soldersmoke.com. On that archive page, just click on the blue hyperlinks and your audio player should play that episode.
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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 ...
In response to popular demand, "SolderSmoke -- Global Adventures in Wireless Electronics" is now available as an e-book for Amazon's Kindle.
Here's the site:
http://www.amazon.com/dp/B004V9FIVW
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For the print version:
For shipping from a printer in the U.S. (probably better for N. American buyers) Click here: SolderSmoke USA Version
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For shipping from a printer in the UK, Spain, or the USA (probably better for UK and other European buyers)
Click here: SolderSmoke EU Version
The two versions are identical, except for a minor difference in the paper used. That's why the prices are a bit different.
SAQ - Dec 24th transmission
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The heritage VLF alternator transmitter on 17.2kHz CW in Sweden has a
special transmission on December 24th. See their website for more details.
Somewhere ...
DXing The Utilities (Part 2)
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*The following blog was originally posted in 2015 but might still be of
interest to anyone with a shortwave radio! Since the migration of HF aero
traffic t...
Santa Klaus ist Und Der Haus!
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Santa with Morse Express Christmas Key 2019 and “friends” . . . . Things
are getting downright festivus in the KY6R shack this weekend. We had a
superb Th...
40m SSB Tramping Rig
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Please see my YouTube channel for details of the build.
http://www.youtube.com/c/CharlieMorrisZL2CTM
*2N3904 Antenna Amplifier*
Voltage gain is set for 4 ...
WRTH 2020 now available for order
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Many thanks to SWLing Post contributor, Thomas Ally, who writes: The new
World Radio TV Handbook is on Amazon. Click here to view on Amazon
(affiliate link...
8 Band Superhet AM Receiver
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Amplitude Modulation holds a fascination for me. It dates back to those
hours spent as a teenager listening to the big broadcast-like amateur AM
stations i...
Heathkit GC-1006 Clock Assembly Log
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Packed in a plain cardboard box inside of a Priority Mail shipping box,
awaiting my attention. On top the famous Heathkit assembly manual, and a
note congr...
Checking Step Attenuator with NanoVNA
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I decided to check the step attenuator with the NanoVNA. It would be nice
to see what the linearity of the step attenuator is across the frequency
range I...
Bringing back my Atari 400…
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Brace yourself for old guy reminiscing about the past. Back in 1980, I was
a sixteen year old kid with a goal: to buy my own computer. I spent a year
mowin...
A Homebrew Stereo for the Shack
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There are times when it's nice to listen to a little music while working at
the bench. For years, I've used a number of different vintage radios for
thi...
A New Look for your uBitx!
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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