Collinear v Yagi (without rotator) for DX

Everything Ham Radio in here, Frequencies, Equipment, Repairs, Mods, Licensing and More

Re: Collinear v Yagi (without rotator) for DX

Postby ACL » Wed Dec 30, 2015 7:51 pm

Thanks for the info Alan. I had hoped modern radios had some sort of coping mechanism in the advent of an accident. From what you've both said it would take more than a one off split second accident to damage a modern transceiver.
ACL
 
Posts: 146
Joined: Sat Oct 25, 2014 8:55 pm

Re: Collinear v Yagi (without rotator) for DX

Postby m0lsx » Wed Dec 30, 2015 8:58 pm

ACL wrote:From what you've both said it would take more than a one off split second accident to damage a modern transceiver.


That is the hope yes.
But modern radios are still far more fragile than valves ever were.
Back in my broadcasting days a mate left his transmitter site, which was on a small area of dry land between sand dunes & salt marsh only accessible by a very long walk or by a locally known track, only to spot the local (East Anglia) DTI officer a few miles away. My mate phoned one of his friends & the transmitter should have been switched off, but instead the mast was dropped & the wire left on the ground transmitting for about 45 minutes before Michael Hawkins raided the site & switched things off.
My mates station was well listened too & SWL reception reports normally cover about 20 minutes of SINPO or SINFO & programming details & it was incredibly disheartening that we could see the signal dip only very slightly as the mast hit the ground & then continue at that same reading for 45 minutes & on a transmitter we no longer had access too. :sad: :sad:

SINPO or SINFO is S for Signal, I for interference from other stations on close by or the same frequency. N for noise, as in static levels. P for propagation, which is also F for fading or QSB. O for overall, but the O should not be higher than any of the previous levels. Each level is from one to 5. With comments like it was a good solid all 4's or a reasonable all the 3's being a common short hand you will hear being used.

SINPO is also traditionally used on the amateur radio 5 MHz band.
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://cse.google.com/cse/publicurl?cx=017721449704518888595:wswa65nq4ww
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
User avatar
m0lsx
 
Posts: 5667
Joined: Wed Nov 21, 2012 9:14 pm
Location: Norwich. TG21.

Previous

Return to Amateur Radio

Who is online

Users browsing this forum: No registered users and 1 guest