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Posted: 3/2/2017 10:49:18 AM EDT
[#1]
That would be a very nice project! Besides having a viable transceiver, the education and experience gained by building it would be worth many times the cost.
An additional bonus is the 5 Watts "QRP full-gallon" output. Most kits are in the 1-2 Watt range. Crystals are available from www.af4k.com There is a severe shortage of good entry-level kits available these days. It's encouraging to see something like this on the market. Here's the "spy radio" the writer refers to: http://www.qsl.net/ik0moz/paraset_eng.htm. It's essentially what most entry level hams were building back in the immediate pre-WWII years, a two stage regenerative receiver and a one tube crystal controlled transmitter. As for the license, Technicians have CW-only privileges in the 3.525-3.600, 7.025-7.125, and 21.025-21.200 segments of the HF spectrum. |
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Posted: 3/2/2017 11:05:14 AM EDT
[#2]
I purchased one of the Bayou Jumper kits, it's quite nice and easy to assemble. Mine fired right up after assembly, but was receiving far above the 40 meter band. There is an active Yahoo group for this kit, and they are most helpful. With a suggestion from the group, I soon had mine receiving in the proper frequency range. Regrettably, I caused some additional issues while tweaking my kit, so I'm waiting for replacement parts.
I'm SLOWLY putting together parts for a proper Paraset build, and hope to start on that someday soon. Cheers... Jim |
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Posted: 3/2/2017 11:20:38 AM EDT
[#3]
As I recall, one of the online reviewers had a problem with the frequency being out of range. He had to install the optional capacitor, C31 I think, to get it into range.
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Posted: 3/2/2017 11:22:43 AM EDT
[#4]
Here's the "spy radio" Very interesting! Thanks for the link to crystals. |
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Posted: 3/2/2017 11:26:00 AM EDT
[#5]
From the link:
"Return with us now to those thrilling days of yesteryear" and build the Bayou Jumper. The name "Bayou Jumper" is a play on "Ocean Hopper", a famous regenerative receiver of a bygone era. It retains that great retro look but with modernized circuitry. Look what I haz: 
Built by my dad in 1967. It need to be re-capped, which a coworker has offered to do for me. I suck at soldering. |
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Posted: 3/2/2017 12:02:24 PM EDT
[#6]
Looks like a nice radio. Would be a fun kit to build.
And Dave, that Ocean Hopper is a very nice keepsake. Definitely get it up and running. 
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Posted: 3/2/2017 12:10:14 PM EDT
[#7]
Quote HistoryQuoted:
From the link: "Return with us now to those thrilling days of yesteryear" and build the Bayou Jumper. The name "Bayou Jumper" is a play on "Ocean Hopper", a famous regenerative receiver of a bygone era. It retains that great retro look but with modernized circuitry. Look what I haz: http://www.flintlock.org/pics/var/albums/Knight_Ocean_Hopper/Knight_Ocean_Hopper.jpg?m=1341188669 Built by my dad in 1967. It need to be re-capped, which a coworker has offered to do for me. I suck at soldering. Very nice! Checl out this article on a "Hopper" restoration: http://www.ohio.edu/people/postr/bapix/oHopper.htm |
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Posted: 3/3/2017 1:31:51 AM EDT
[#8]
In its original application as a behind the lines spy radio, does anybody know what the operator used for an antenna? Seems like 40m operation would limit your stealth options.
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Posted: 3/3/2017 4:09:51 AM EDT
[#9]
Well, if you believe Wikipedia, WWII Norwegian resistance operative Torstein Raaby found a particularly convenient antenna for some of his operations:
"Raaby was born in Dverberg, Vesterålen. During World War II he became a Secret Intelligence Service officer, having entered training in 1943.[1] He spent ten months in hiding in the village of Alta, sending detailed reports on German warships and their radar installations to England via a hidden radio set surreptitiously connected to the antenna of a German officer. His reports were instrumental helping the RAF to find and permanently disable the battleship Tirpitz. For that and other undercover operations during the war, Raaby was awarded Norway's highest decoration for military gallantry, the War Cross with sword in 1944. Raaby held the rank of Second Lieutenant (Fenrik)." Now that's pretty bold! Cheers... Jim |
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Posted: 3/3/2017 9:42:20 AM EDT
[#10]
Quote HistoryQuoted:
In its original application as a behind the lines spy radio, does anybody know what the operator used for an antenna? Seems like 40m operation would limit your stealth options. Mostly an end-fed thin wire as long and as high as possible, sometimes around the ceiling, into the attic if possible. The house wiring served as the counterpoise. The Secret Wireless War goes into great detail about MI6 Bletchley Park operations and the agents and equipment they sent into the field. |
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Posted: 3/4/2017 12:21:23 PM EDT
[#11]
Quote HistoryQuoted:
In its original application as a behind the lines spy radio, does anybody know what the operator used for an antenna? Seems like 40m operation would limit your stealth options. This really needs a built in antenna tuner for end fed ops + a counterpoise of course. A keyer like the Pico kit would be a great add on too. 73, Rob |
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Posted: 3/4/2017 12:58:21 PM EDT
[#12]
The Yahoo group for the Bayou Jumper (https://groups.yahoo.com/neo/groups/BayouJumper/info), is a public group, so anyone can scan the conversations and files there.
Much discussion has been made of adding accessory keyers, sidetone generators, etc. Jim... |
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Posted: 3/4/2017 8:05:41 PM EDT
[#13]
Hit.
I hate you guys. I dont know CW yet. 
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Posted: 3/5/2017 1:55:14 AM EDT
[#14]
Quote HistoryQuoted:
I hate you guys. I dont know CW yet. This is really embarrassing to admit, but you have no reason to hate me... yet! But I'm working on it! 
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Posted: 3/5/2017 10:12:58 AM EDT
[#15]
Quote HistoryQuoted:
Hit. I hate you guys. I dont know CW yet. That's easily fixed. It's not rocket surgery, but, like learning to shoot properly, does require practice and persistence. Click here for some hints and some links to CW training programs. |
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Posted: 3/5/2017 11:18:07 AM EDT
[#16]
I talked to Joe yesterday and mentioned this rig. He said he has a review of this will be out in QST next month.
So. I figured that I would go ahead and pull the trigger on this one before the four state QRP group get busy. |
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Posted: 3/25/2017 2:21:02 PM EDT
[#17]
I'm dragging this to the top to show off my Bayou Jumper. It's all but completed now, just waiting on some Terry clips from old Blighty to store the tubes in the lid as did the originals. I couldn't resist the Bayou Jumper kit when I learned of it, but before it ever arrived, I wondered if it might be possible to make it a bit more like the original Whaddon MK VII "Paraset."
The tubes are of course non-functional, but the aerial and tank indicator lamps do work when the built in key is depressed. Dome headed, brass, straight slot screws (all slots turned properly in line!) and a vintage tuning dial add to the effect. Some of the builders of these choose to put little travel stickers on the outside of the box. That idea didn't appeal, but I saw an old Norwegian anchovy can label that I liked, so I laminated that to the top of the wee box for camouflage. 
Now I just have to hope I don't come across some Gestapo officer who craves anchovies! Cheers... Jim |
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Posted: 3/25/2017 9:34:54 PM EDT
[#18]
Well sumbitch. Jim Giammanco N5IB is a local club member who Elmers me in my homebrew projects. I've held the prototype and never thought he'd go national with it. He gave a talk at FDIM at Dayton about his rig and obviously the 4SQRP decided to go with it. Cool, way cool.
Here some info from his website of the TX and RX prototype. http://www.n5ib.net/Tuna%20Tiny%20Spy%20Radio%20transmitter%20overview.pdf http://www.n5ib.net/Sauteur%20de%20Bayou%20Overview.pdf |
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Posted: 3/25/2017 10:12:27 PM EDT
[#19]
How fortunate you are to know Jim! I had some trouble with my kit, and he was remarkably patient and helpful. I really enjoyed "meeting" him.
Cheers... Jim |
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Posted: 3/26/2017 7:41:55 AM EDT
[#20]
Read Jean Le Carre's "The Looking Glass War". This type, if not the exact same radio, is utilized in it. Very interesting read, with some quirky terms like "earth" instead of "ground".
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Posted: 3/26/2017 12:27:09 PM EDT
[#21]
Thanks, I'll add that to the reading list.
Finally obtained a copy of, and am reading, "Two Eggs On My Plate." Also just finished "Between Silk And Cyanide." The latter is VERY good. Not an out in the field operational story, but a look behind the scenes at devising systems of codes for field operators and the constant battle to determine which agents may have been captured and which transmissions to trust. |
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Posted: 3/26/2017 5:44:11 PM EDT
[#22]
Two more good ones:
http://www.arrl.org/shop/The-Secret-Wireless-War/ http://www.arrl.org/shop/Inside-Enigma/  
"Inside Enigma" goes into great detail about how the Enigma Machine was made and used. This Enigma Emulator program is interesting to play with. It not only encrypts and decrypts messages, it shows the signal path through the Enigma rotors and how the path changes with each letter typed in: http://enigmaco.de/enigma/enigma.html 
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Posted: 3/26/2017 9:11:59 PM EDT
[#23]
Quote HistoryQuoted:
How fortunate you are to know Jim! I had some trouble with my kit, and he was remarkably patient and helpful. I really enjoyed "meeting" him. Cheers... Jim When he gives talks at the club meetings he has the ability to take complex subjects and breaks it down so that a 'tard like me can understand it. He then builds on that and takes you to the next level. Those kind of people in the ham community are rare. |
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Posted: 3/26/2017 11:29:57 PM EDT
[#24]
I got the resistors on the board today.
03/28: Semiconductors on.
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Posted: 4/4/2017 11:09:09 PM EDT
[#25]
Caps on board 4/4.
Note: Those caps are tiny. The numbers are even more fun. I used a jewelers loupe to identify. The last cap doesn't get populated quite yet. 
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Posted: 4/5/2017 12:35:09 AM EDT
[#26]
What are you using to hold the circuit card while you solder ?
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Posted: 4/5/2017 12:40:15 AM EDT
[#27]
Otar-
I like your fixture for holding the board. That would have been VERY handy! I did check the tiny designators on those caps, but I also verified them with my $20 Amazon capacitance meter. "Belt and suspenders" approach, I guess. I don't know if you are following the Bayou Jumper Yahoo group, but there has been some discussion of adding one turn (20 rather than 19) to the toroid to improve the odds of having the receive frequency in the right range. It may indeed not be necessary, but it would be easier to remove one turn than to add one later. Make your own decision on the wisdom of this. I managed to short U1, the headphone amp, and later had to swap out Q2 to get proper function. I purchased backup parts for all of the semi-conductors, so if you happen to need something, send me a message and I'll shoot it out to you. While troubleshooting, I shorted U1 with that bare buss wire on the headphone jack. I later replaced that with some No. 26 insulated wire (on the key jack too), which was a better choice. Cheers... Jim |
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Posted: 4/5/2017 6:57:18 AM EDT
[#28]
Quote HistoryQuoted:
What are you using to hold the circuit card while you solder ? https://www.amazon.com/dp/B00Q2TTQEE?tag=vglnk-c102-20 Its so much easier to build using one.
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Posted: 4/5/2017 7:34:32 AM EDT
[#29]
Quote HistoryQuoted:
Otar- I like your fixture for holding the board. That would have been VERY handy! I did check the tiny designators on those caps, but I also verified them with my $20 Amazon capacitance meter. "Belt and suspenders approach, I guess. I don't know if you are following the Bayou Jumper Yahoo group, but there has been some discussion of adding one turn (20 rather than 19) to the torrid to improve the odds of having the receive frequency in the right range. It may indeed not be necessary, but it would be easier to remove one turn than to add one later. Make your own decision on the wisdom of this. I managed to short U1, the headphone amp, and later had to swap out Q2 to get proper function. I purchased backup parts for all of the semi-conductors, so if you happen to need something, send me a message and I'll shoot it out to you. While troubleshooting, I shorted U1 with that bare buss wire on the headphone jack. I later replaced that with some No. 26 insulated wire (on the key jack too), which was a better choice. Cheers... Jim As for testing the components, I'm testing all the components and noting values on the build sheet with my Amazon transistor tester. I like that it does way more than transistors. Resistors, inductors, caps... Last night when I tested out the Al electrolytic's it told me the ESR and Vloss, in addition to the nf. And, good tip on the buss wire for the headphone jacks. I'm not there yet, but I will call an audible and use insulated wire on all those. Thanks! |
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Posted: 4/5/2017 8:34:48 PM EDT
[#30]
Quote HistoryQuoted:
I probably should join the yahoo group and see whats going on along with updates. I'll do that tonight. As for testing the components, I'm testing all the components and noting values on the build sheet with my Amazon transistor tester. I like that it does way more than transistors. Resistors, inductors, caps... Last night when I tested out the Al electrolytic's it told me the ESR and Vloss, in addition to the nf. And, good tip on the buss wire for the headphone jacks. I'm not there yet, but I will call an audible and use insulated wire on all those. Thanks! |
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Posted: 4/5/2017 9:04:26 PM EDT
[#31]
Quote HistoryQuoted:
What is the component tester you're using? 
I've got one that I built, but this off the shelf unit does more and tells more. So far its just a bench unit. I haven't bothered to locate a case housing for it yet. Its a must have for my bench. |
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Posted: 4/5/2017 9:40:48 PM EDT
[#32]
Hey, that's neat! Does it test inductors?
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Posted: 4/5/2017 11:20:23 PM EDT
[#33]
Quote HistoryQuoted:
Hey, that's neat! Does it test inductors? Quote HistoryQuoted:
Hey, that's neat! Does it test inductors? eta: Specifications: Test ranges: Inductors, capacitors , diodes, dual diode , mos, transistor, SCR , the regulator, LED tube , ESR, Resistance,Adjustable potentiometer Resistance: 0.1 ohm resolution, maximum 50M ohm Capacitor: 25pf -100,000 uf Inductors: 0.01mh-20H |
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Posted: 4/21/2017 9:22:58 PM EDT
[#34]
Deleting this post...
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Posted: 5/16/2017 10:55:54 PM EDT
[#35]
Also just finished "Between Silk And Cyanide." The latter is VERY good Hermann Giskes wrote his own book about the same period and events, from his view, called London Calling North Pole. |
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