'Someone' ought to offer to do a review of the performance of the various kits available for LNAs, or indeed design and produce a custom kit for a low cost one.Baofeng to start making LNAs that cost significantly less than £150!
It needs to have a minimum gain of 20dB, less than 1dB noise, be unconditionally stable, operate off small batteries, have good input overload protection and of course be very cheap.Any LNA (Low Noise Amp) preferences?
Screen shot shows your tracking Unisat 5 ?Wee hours of morning update: This time! I stayed up for a favourable pass, & was delighted to hear a brief tone morse beacon of ~10wpm suprisingly clearly at ~12:58pm UTC.
EAGLE 2
1 39436U 13066W 13345.17096100 .00014971 00000-0 17851-2 0 145
2 39436 097.8018 057.3713 0031269 146.9505 213.4091 14.84023653 2937
It has, and 5 days from 03121213 is the 8th, which is why another was added several days ago;$50SAT-Eagle2 5 Day Orbit Predictions 031213.txt
files on Dropbox as the latter is expired.
Fair enough, have you been able to verify by monitoring the change in Doppler shift that the TLEs you have just posted are correct ?I take my info from space-track.org Norad catalogue object 39436 "DNEPR OBJECT W"
the EAGLE 2 title I have edited to better reflect what you may wish to see.
No idea, maybe.Another skinflint question. Would the type of TV 'masthead amplifiers' that are readily available for about £10 be suitable for this application? As they seem to have a useful performance at the frequency of interest.
There are currently two documents there clearly visible and yes they have similar names;Sorry, I didn't realise that there were more than one similar document there
Well exactly; "seemingly Identified, but with no reliable information".What Norad want me to believe? Hmmmm sounds a little cynical! You mentioned that the best guess was OBJECT W, which became reported in the catalogue around seven days or so after launch. Seemingly Identified, but with no reliable information or TLE generated, probably due to size
The "real" ones are works of metal-bashing art.Thanks for the LNA tip and my best bet is to purchase the Ramsey kit from eBay. I'm being a bit lazy and also thinking of purchasing a ready made antenna, having been some what discouraged by the apparent complexity of making a Quadrifilar Helix Antenna (which look a bit like those interlinking metal puzzles that you get in Christmas crackers).
See posts #41 and #160However, would one made from string / pipe and RG58 work?
Yes, I have seen them.See posts #41 and #160
So if you already knew from reading those posts the answer to your question what was the purpose of your post ?Yes, I have seen them.
So if you already knew from reading those posts the answer to your question what was the purpose of your post ?
The TLE for 2013-066W is accurate to within 5-10 seconds.I have put the TLE for Norad catalogues #39432 through 39446 (Object T through Z and AA through AG) into Orbitron and the nearest contender to DNEPR OBJECT W is Norad catalogue #39435 DNEPR OBJECT V. This is around four minutes ahead of 39432 and therefore from what you have said already, this seems a very unlikely candidate.
What Norad objects do you still have as possible contenders please?
EAGLE 2
1 39436U 13066W 13345.17096100 .00014971 00000-0 17851-2 0 145
2 39436 097.8018 057.3713 0031269 146.9505 213.4091 14.84023653 2937
Should have of course read 437.500MHz my typo Stan and Lance . . . sorry!So the effects of being tuned to 437.00MHz are . . .