Bandspread

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LA1HU
Posts: 9
Joined: 29 Sep 2019, 00:28

Bandspread

Post by LA1HU » 15 Oct 2019, 23:42

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 but not too much.

Does anyonehave experienced in this to share ? schematic, etc. i would be glad to hear from you.
Thank you for your feedback

Jan
LA1HU

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LA1HU
Posts: 9
Joined: 29 Sep 2019, 00:28

Re: Bandspread

Post by LA1HU » 18 Oct 2019, 21:17

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/co ... ips_07.htm

Btw. it does not look like paraset.co.uk is active anymore. Tried to send them an email but could not be delivered.

Sa2clc
Posts: 6
Joined: 09 Feb 2020, 10:52

Re: Bandspread

Post by Sa2clc » 09 Feb 2020, 13:09

I put a series 40pf mica cap with the tuning capacitor. Added a 70pf trimmer capacitor i parallell with the series caps, and adjusted that to reach 3500khz on receive.
A better approach would have been a 10pf tuning caps, to better coincide with the 0-100 marks.

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Parasetguy
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Posts: 32
Joined: 21 Aug 2018, 15:32
Location: The Netherlands, Velp
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Re: Bandspread

Post by Parasetguy » 09 Feb 2020, 22:01

Hi guys
Concerning bandspread:
You should also look at this:
https://qsl.net/ve7sl/paraset.html

Kind regards,
Henk - Parasetguy

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