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| Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members. |
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4th Oct 2006, 11:00 pm
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#1 |
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Hexode
Join Date: May 2005
Location: Wigan, Greater Manchester, UK.
Posts: 479
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The Paraset
I'm thinking of having a go at building a "paraset" http://www.mines.uidaho.edu/~glowbugs/paraset.htm probably a small change in the heater supply to allow it to operate from a 12v battery and a transistorised inverter, don't have any 6SK7s but have a few 6K7Gs which seem to electrically identical except that g1 is the top cap connection. Although I have the circuit diagram, the problem is, I don't have any info on the amount of windings on the anode/tank coils of the 6V6, (except the one-turn connection for the bulbs) or the tapped coil on the 6SK7, has anyone built one of these?
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5th Oct 2006, 12:12 am
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#2 |
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Heptode
Join Date: Feb 2006
Location: Roscommon, Ireland
Posts: 732
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Re: The Paraset
Hi Alf
An Interesting set. On that page there is a link (http://www.qsl.net/ik0moz/paraset_eng.htm) which gives an account of the construction of one of these. Including the winding details of the coils. But the winding details are not in English.  Regards Frank |
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5th Feb 2007, 9:12 pm
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#3 |
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Dekatron
Join Date: Feb 2005
Location: St.Ippolyts, Hitchin, Hertfordshire QRA IO91UW
Posts: 3,517
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Re: The Paraset
Just to refresh this thread - I am building one of these at the moment - no reason why everyone shouldnt have one in their collection - they are very easy to make.
The transmitter is a bit fussy, so I have changed the Oscillator circuit to a Colpitts type - much better than the "gimmick" capacitor for feedback! Will try to get some pictures posted as soon as time permits. Cheers Sean
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Engineers make things work and have spare bits when finished |
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5th Feb 2007, 9:22 pm
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#4 |
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Retired Dormant Member
Join Date: Oct 2003
Location: Halesworth, Suffolk, UK.
Posts: 413
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Re: The Paraset
Sean are you intending to fit this in a suitcase ??
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5th Feb 2007, 9:36 pm
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#5 |
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Moderator
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 21,288
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Re: The Paraset
I don't think parasets were ever fitted in suitcases. Possibly they had a carry case made from haversack material.
Many spysets were of course fitted in suitcases, but I doubt they were a very effective disguise, as all the suitcases were alike. Apart from that when carrying say a B2 set you develop a distinct lean to one side, as the set is very heavy. Any alert German would have realised that you had more than your clothes in the case.
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Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. |
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7th Feb 2007, 9:40 pm
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#6 |
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Retired Dormant Member
Join Date: Apr 2006
Location: Shrewsbury, Shropshire, UK.
Posts: 67
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Re: The Paraset
Why on earth is that
web page part of the Idaho college of mines??! |
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8th Feb 2007, 3:51 pm
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#7 |
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Dekatron
Join Date: Feb 2005
Location: St.Ippolyts, Hitchin, Hertfordshire QRA IO91UW
Posts: 3,517
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Re: The Paraset
Pictures of the Paraset as promised - I will take a few more when time permits
Cheers Sean
__________________
Engineers make things work and have spare bits when finished |
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14th Feb 2007, 5:10 pm
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#8 |
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Hexode
Join Date: Jan 2007
Location: Weeting, Norfolk.
Posts: 465
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Re: The Paraset
Looks smart! Where did you find the older parts?
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Real radios glow in the dark M6GLD |
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14th Feb 2007, 5:39 pm
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#9 |
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Dekatron
Join Date: Feb 2005
Location: St.Ippolyts, Hitchin, Hertfordshire QRA IO91UW
Posts: 3,517
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Re: The Paraset
All in stock here - I hoard no end of old junk!
Seriously - I dont throw anything out really - I just collect stuff that might come in handy one day.... I will post some more piccys once I have built some more - Just working on the power supply (mains) Cheers Sean
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Engineers make things work and have spare bits when finished |
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