Search found 9 matches

by LA1HU
23 Jan 2020, 17:02
Forum: Building MK-VII a.k.a. Paraset
Topic: HOT LF-out tube
Replies: 3
Views: 12253

Re: HOT LF-out tube

Thanks Henk.

Measured here:

Pin 4 grid1 = + 1.1 mV.

Anode current 6.8 mA.

Anode Pin 8 = 210 V

I see on the voltage map that g1 says g1 = 0 volts ?

Do you think the value of cathode and g1 resistance is critical?

Cathode resistance here is 254 ohms, and the

g1 resistance is 258 Kohm
by LA1HU
22 Jan 2020, 22:24
Forum: Building MK-VII a.k.a. Paraset
Topic: HOT LF-out tube
Replies: 3
Views: 12253

HOT LF-out tube

Hi all I find that the LF out tube becomes much hotter than the RF tube, hard to put the fingers on. That's something I haven't noticed until now. Have therefore replaced all the capacitors with new ones, checked that everything else is normal. No immediate errors found. Choke measure to 33H / 885R....
by LA1HU
18 Nov 2019, 22:25
Forum: Building MK-VII a.k.a. Paraset
Topic: Antenne for Paraset
Replies: 3
Views: 12858

Re: Antenne for Paraset

Hei Henk

18 m long wire ok - I get to try out, as well as good grounding.

The paraset actually tunes well on my 83m loop, BUT without knowing how well it actually works, :mrgreen: but it is far too long.
I also notice that the antenna is very quiet and good / RX.
by LA1HU
24 Oct 2019, 21:42
Forum: Building MK-VII a.k.a. Paraset
Topic: Antenne for Paraset
Replies: 3
Views: 12858

Antenne for Paraset

Hi

Has anyone here tested out which antenna works well for Paraset? I gonna use the set from my shack, not primary field-operation.
(In my case for 80 meters).
by LA1HU
18 Oct 2019, 21:17
Forum: Building MK-VII a.k.a. Paraset
Topic: Bandspread
Replies: 3
Views: 13205

Re: Bandspread

I found this - maybe this will turn out ok for me. (Will send you a email Henk in case you have the RX coil parts and caps. for me?) http://sm7ucz.se/a_www_paraset_co_uk/construction_tips_07.htm Btw. it does not look like paraset.co.uk is active anymore. Tried to send them an email but could not be ...
by LA1HU
15 Oct 2019, 23:42
Forum: Building MK-VII a.k.a. Paraset
Topic: Bandspread
Replies: 3
Views: 13205

Bandspread

Hello all paraset friends After practicing the paraset on reception, and thinking about how difficult the RX is to tune, I think I will choose to only prioritize the 80m band. Preferably get a band spread that covers the cw portion of the band from 3.5 Mhz to 3.6 Mhz, but preferably a little over bu...
by LA1HU
11 Oct 2019, 23:17
Forum: Building MK-VII a.k.a. Paraset
Topic: New Pages: Hut 14 - Builder's Delight
Replies: 1
Views: 7673

Re: New Pages: Hut 14 - Builder's Delight

Att: Quartermaster
Will inform.
LA1HU
Agent
by LA1HU
06 Oct 2019, 02:41
Forum: Building MK-VII a.k.a. Paraset
Topic: Almost completed
Replies: 3
Views: 10408

Re: Almost completed

Hi Henk Yes things take time is understandable. I feel like I have less time now that I am retired than when I was at work. Too many projects. :) I am looking for a serial number METAL-plate to the paraset. Either one I can have on the chassis or on the box or both. Do you have any tips where I can ...
by LA1HU
03 Oct 2019, 00:57
Forum: Building MK-VII a.k.a. Paraset
Topic: Almost completed
Replies: 3
Views: 10408

Almost completed

Hi First of all - Henk, thanks for a nice forum. My paracet project was completed a few years ago. There was a lot of collection of parts world wide. The radio worked on the first try - NO SMOKE :D But it is only now that I am starting to make a suitable box for it. The project is probably soon fini...