I have HOA rules that prevent me from putting antennas on the roof
where I live. However, I can put antennas in the attic. I have an
Az/El setup that I could mount up in the attic, but wanted to get some
feedback from folks on any experience they've had working the LEO
satellites with antennas in the attic.
- Dave N2TEB
(HD video: set to 720p and Fullscreen)
YouTube video featuring the first results;
- HO68 CW
- HO68 FM
- AO51 FM
- VO52 SSB
- OOREOS 1k2 AX25 (packet radio with MixW)
Results are amazing. The FUNcubeDongle gives
results similar to the Kenwood TS2000x.
Tests are done with the dongle straight out
of the box, no tweaking.
Great achievement Howard & team !
Henk, PA3GUO, The Netherlands
i would like to receive the RAX Satellite.
as i read on the Amsat web it is GMSK 9600 BPS.
I would like to know what to hear.
Should i hear the noise like the AO-51 bird?
What do i need to decode it?
Thanks in advance
73 de Enzo IK8OZV
EasyLog 5 BetaTester
EasyLog PDA BetaTester
D.C.I. CheckPoint Regione Campania
******* GSM +39 338 9749786 *******
****** SMS +39 338 9749786 ******
***** FAX +39 328 7244294 *****
*** 2nd e-mail: vimone(a)tin.it ***
Question: when mounting an Arrow to a TV rotator, are the 2m elements
vertical, horizontal or ...?
Guess I better hang onto my bought-from-eBay-but-never-used ARR 432MHz
Tnx & 73,
Joe WB3CFN <-now on the hunt for a good ol' U100 (Ka-CHUNK Ka-CHUNK
CLINT >> Got some attractive "spare"accessories just taking up room in your shack?
Get rid of 'em - by having the recipient send a couple bucks to AMSAT.
DEE >> ... Good ideas ...
EVERYBODY wins! The recipient gets a needed accessory. The recipient gets "credit" for the
tax-deductible donation to AMSAT-NA.
And Clint's spouse is happy that there's one less thing laying 'round the house ...
HAPPY NEW YEAR, AMSAT-BB!
Well, over in a YahooGroup covering the Yaesu FT-60 handheld radio this evening -
1. Pat KC2RNN needed a replacement FT-60 wall wart ...
2. Clint K6LCS had one, un-used, sitting 'round ...
3. AMSAT-NA is running a fund drive ...
Put those three ingredients together, and Clint K6LCS is sending Pat a new wall wart for Pat's donation to AMSAT!
(I feel like I should be on a PBS telethon ... (grin).)
Got some attractive "spare"accessories just taking up room in your shack? Get rid of 'em - by having the recipient send a couple bucks to AMSAT.
The KD8KSN/8 EN90/EM99 cards went out in the mail this morning with the exception of AB0XE, KJ4CTZ and VE3JW. I ran out of labels and envelopes, so give an extra day or two on those three.
I have heard from several stations that didn’t get to work me at this boundary that they need one or both of these grids. The plan in to return to this grid boundary in late winter/early spring before corn is planted and working the boundary become difficult. I will definitely try to go on a weekend this time.
73, and Happy New Year!
The AO-51 status page says;
December 30 (late UTC)
CW/FM Repeater, V/U For Straight Key Night
Uplink: 145.880 MHz CW
Downlink: 435.300 MHz CW over FM
The question was asked last week or so on the BB about what the uplink mode
really is supposed to be, A1? Will it receive like a narrow transponder and
output CW over FM with different frequencies of audio tone as the incoming
signals populate the passband. I do not recall ever seeing an answer to the
Obviously there should be an avoidance of the use of the normal FM by ground
stations to allow the straight key folks a fighting chance.
73 de N5HYP
2713 Lake Gardens Drive
Irving, Texas 75060
What sort of radiation pattern (mainly elevation lobes) would a dualband beam, like the Cushcraft A270-6S or Elk Antenna, have when mounted for vertical polarization? Does it have useful elevation lobes for most LEO satellite work? I used to have a Cushcraft A270-10S mounted horizontally and whichever band was on the top of the boom had some very high lobes with nothing on the lower parts of the passes.
73s John AA5JG
It can be done but there will be some loss. Generally the higher the frequency, the bigger impact of barriers like roofs and walls. So 70 cm downlink will suffer noticeably.
I’ve done it and make the following recommendations.
Get the most gain you can. While omnis are possible, you may lose patience with limited passes as I did when I started with turnstiles and moxon turnstiles. Get or build a yagi or other directional antenna and turn with a cheap tv rotor (I prefer old alliance u100s as they are inexpensive used and quite rugged). The biggest one you can afford or squeeze into that attic space available. Because you don’t need to weatherize, consider just rigging up an Arrow or Elk (I did it with the Elk) at fixed elevation.
Get a preamp. Its night and day, believe me, when you have one with less than ideal antennas. I use the ARR 25 watt switched units. Youll really benefit from the preamp on 70 cm downlink. If you do VO52 or A07 mode B, a preamp on 2M is helpful, but I’ve found these sats quite usable without one from the attic. While this might just be my QTH, I found a lot more QRM on 2M than 70 cm and the preamp just tends to make the QRM louder.
Keep the antenna away, best you can, from any possible sources of coupling (metal), including house wiring, ductwork, flashing, and even foil backed insulation batts. You cant avoid everything up there, but just try your best. The effect, exhibited often in the form of directional SWR issues and RFI is a combination of how big the metal is and how far away. In my case, I had to move things around due to nearby heating ducts.