Search found 54 matches
- 03 Feb 2020, 11:42
- Forum: Building MK-VII a.k.a. Paraset
- Topic: HOT LF-out tube
- Replies: 3
- Views: 144008
Re: HOT LF-out tube
As I have problems myself with getting the transmitter to work, I stumbled upon this site: https://qsl.net/ve7sl/paraset.html It has diagrams with measurements (read about his PSU) that can be helpful. And interesting mods. Pin 4 grid1 should be negative to get amplification going. Tube handbook say...
- 22 Jan 2020, 22:44
- Forum: Building MK-VII a.k.a. Paraset
- Topic: HOT LF-out tube
- Replies: 3
- Views: 144008
Re: HOT LF-out tube
Hi Jan
Measure the current of the Plate. It must not exceed 13 mA.
Check Grid#1 voltage. Should be minus 1 V.
Regards
Henk
Measure the current of the Plate. It must not exceed 13 mA.
Check Grid#1 voltage. Should be minus 1 V.
Regards
Henk
- 06 Dec 2019, 22:44
- Forum: Building MK-VII a.k.a. Paraset
- Topic: Power supply for MK-VII
- Replies: 5
- Views: 248236
Re: Power supply for MK-VII
Sorry for the late answer.
But look here:
https://www.paraset.nl/aa/wp-content/up ... 24x644.jpg
73 de Henk - Parasetguy
But look here:
https://www.paraset.nl/aa/wp-content/up ... 24x644.jpg
73 de Henk - Parasetguy
- 06 Dec 2019, 22:41
- Forum: Building MK-VII a.k.a. Paraset
- Topic: What is C3?
- Replies: 1
- Views: 103579
Re: What is C3?
Hi Matt,
That's just what it is, a very small capacitor formed by a few twists around a wire.
Here you can just see it:
https://www.paraset.nl/aa/wp-content/up ... 24x571.jpg
Kind regards,
Henk - Parasetguy
That's just what it is, a very small capacitor formed by a few twists around a wire.
Here you can just see it:
https://www.paraset.nl/aa/wp-content/up ... 24x571.jpg
Kind regards,
Henk - Parasetguy
- 03 Dec 2019, 16:55
- Forum: Building MK-VII a.k.a. Paraset
- Topic: Antenne for Paraset
- Replies: 3
- Views: 71938
Re: Antenne for Paraset
Due to the 2 var caps Antenna and tank tuning, the Paraset is very forgiving concerning antenna length.
But it was designed to end-fed antenna, and not hang up, half wave high!
73, H.
But it was designed to end-fed antenna, and not hang up, half wave high!
73, H.
- 03 Dec 2019, 16:51
- Forum: Building MK-VII a.k.a. Paraset
- Topic: Capacitor values
- Replies: 6
- Views: 101566
Re: Capacitor values
Only read it today. So you want to put a 200 pF cap in series with a 200 pF variable cap. That will work, only the characteristic of the tuning will be a bit "odd". Throw in the values here: https://www.digikey.com/en/resources/conversion-calculators/conversion-calculator-series-and-parall...
- 14 Nov 2019, 18:27
- Forum: Building MK-VII a.k.a. Paraset
- Topic: Antenne for Paraset
- Replies: 3
- Views: 71938
Re: Antenne for Paraset
Hello Jan Thore I found this: Contents of a sealed container PARASET / Contenu du container etanche de Paraset Source Pascal F8JZR Tks Pascal de f6eju Contenu d’un container étanche : Un émetteur récepteur Paraset type MK VII en boitier métal avec 3 tubes et cordons d’alimentation. Une alimentation ...
- 22 Oct 2019, 14:38
- Forum: Building MK-VII a.k.a. Paraset
- Topic: Capacitor values
- Replies: 6
- Views: 101566
Re: Capacitor values
They just did not do that, back then. This indication was also used on capacitors.
- 22 Oct 2019, 14:14
- Forum: Building MK-VII a.k.a. Paraset
- Topic: Capacitor values
- Replies: 6
- Views: 101566
Re: Capacitor values
Hi Matt
Micro Micro = pico
(10 to power 6 plus 10 to power 6 = 10 to power 12)
Regards,
Henk - Parasetguy
Micro Micro = pico
(10 to power 6 plus 10 to power 6 = 10 to power 12)
Regards,
Henk - Parasetguy
- 17 Oct 2019, 17:44
- Forum: Building MK-VII a.k.a. Paraset
- Topic: quick introduction
- Replies: 1
- Views: 43661
Re: quick introduction
Hello Matt
Welcome to our community. Keep us informed about your progress, we love to read about that.
Kind regards,
Henk - Parasetguy
Welcome to our community. Keep us informed about your progress, we love to read about that.
Kind regards,
Henk - Parasetguy