Moon-net September 2021

moon-net@mailman.pe1itr.com

102 participants
103 discussions

by Pete M

I have been playing with a new Triquint ULNA device (TQP3M9036). It Shows a lot of promise. It is like a MAR or MSA device in that it is 50ohm in and out. and has a claimed NF about .4db nf ( their numbers). I have built several pramps to test them and have gotten even better than they claim and they cover 50-1296 with ease and NF is .4ish or below. The S11 and S22 are both great and the OIP3 is +35db also ...very nice device. It has great promise as a good terrestrial LNA. Preamps are foolproof to build and would cost under $50 if all the best quality parts are used. Just for information only ... Pete WA2ODO -- ++++++CONFIDENTIALITY NOTICE++++++ The information in this email may be confidential and/or privileged. This email is intended to be reviewed by only the individual or organization named above. If you are not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any review, dissemination or copying of this email and its attachments, if any, or the information contained herein is prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email from your system.

6 months

Ready on 6cm.

by Bruce Halasz

Hi all, I’m ready on 6cm with the same dish I’m using on 3cm. Despite the strong local 5 GHz WiFi noise, had a nice 579/569 first QSO with this setup today with HB9Q, thank you Dan ! Setup is a 3.7m dish and 60W at CP feeder. I can be QRV on 6cm or 3cm most of the days, skeds and tests are very welcome, as usual. Vy 73 Bruce PY2BS qrv 70cm, 33cm, 23cm, 13cm, 9cm, 6cm and 3cm.

1 year, 7 months

Suggestions for a 2M antenna array

by Doug Shields

Hello all, After many years of threatening to get on moonbounce I am getting close to having all the parts together. I am putting together a 2x2 array of M2 2M9SSB antennas. I would like to have any suggestions from anyone that has put together a similar array. Is it necessary or desirable to use fiberglass for the "H" frame? What is the best method of routing and supporting the feedline to the antennas? What type of feedline should be used from the power divider to the antennas? Please share your experience with me. Also I am looking for a modestly priced power amplifier. Any suggestions for an amp or do you have one that you no longer use that you might offer for sale? All input is greatly appreciated and will get me on the moon that much sooner. Thanks. Doug Shields W4DAS Stuart, Florida EL97 -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

1 year, 8 months

23cm lo-noise preamp dc inserter

by pcbyrne＠w7nmd.me

I need reasonably low cost bias-t to insert and extract 12 vdc at 500 ma max for my RFDesign lo-noise preamp mounted at the septum feed. I have seen EBay listings by ziblook that are under $50. Any one have any suggestions. 73 palmer w7nmd

1 year, 8 months

SPID BIG RAS/HR motor. Anyone have one or has anyone repaired one?

by Bob Atkins

I have a SPID BIG RAS/HR motor which seems to have died for some reason. It was working fine one minute, then seems to have done open circuit. There was no stress on it. If was running on about 20v, with a 50% PWM supply and drawing a few hundred mA. Very little load on the motor. I know it's the motor and not any connectors or switched (it's the EL motor which has limit switches in the power lines), because I cut the wire close to the motor and measured things there. Two questions. First, has anyone been able to "fix" these (or similar) SPID motors? I can't believe the motor winding failed since the motor was not under any kind of stress. I don't know how they are constructed (and there's no SPID information on that), but if there are brushes in there it's possible they have failed. I have not yet pulled the motor (not a very easy job) and stripped off the "waterproof" cover to see what visible under it. Second, if repair is not possible, does anyone have one they would sell? I know I can get a new one from Europe (RfHanDesign), but if I can find a used one here in the US, that would be easier. Thanks in advance for any information or comments, Bob, KA1GT

1 year, 8 months

Moon is leaving us!

by Doug Grant

https://www.theatlantic.com/science/archive/2021/09/moon-moving-away-earth/…

1 year, 8 months

pse ignore

by Krzysztof Moczkowski

1 year, 8 months

SV5/HB9COG DXpedition update30.09.2021 11.30z

by dan＠hb9q.ch

Hi All We finished our 3400 MHz activity with 13 initials. Most stations were worked in Q65-60C, 5 stations in CW, for a total of 18 QSOs. Our 5.7 GHz station is tested (sun-noise 7 dB) and ready for our activity coming moon-path. Our activity on 6 cm is as follows: We will be QRV on our moon-rise only for about 1h (depending on activity) and then we QRX until 03.00z. Here the details: 30. September: 22.30z until 23.30z on 5760.100 Q65D SV5/HB9COG 1st CFOM and 1. October: 03.00z until 11.00z on 5760.100 Q65D SV5/HB9COG 1st CFOM For more information go to https://hb9q.ch/2018/?page_id=2311 there you always find the latest information and all details of the DXpedition. Vy 73, Dan for the SV5/HB9COG team

1 year, 8 months

Re: [Moon-Net] SPID BIG RAS/HR motor. Anyone have one or has anyone repaired one?

by analogman＠sapo.pt

Hi Bob, Thankfully the solution to the motor showing as O/C is easily fixed. The stator contacts get gunked up over time until ultimately they stick open circuit. There is a small hole at the back of the motor, the right size for the plastic straw that comes with WD40. Squirt WD40 in there repeatedly. Saturate it. Apply 24V DC, not the pulsed supply from the controller, and see if it's cleared. This happened to me a few of years ago. This remedy, supplied by Frank at RFHam design fixed it straight away. No need to remove the drive from the tower thank God. It hasn't returned because I repeat this every year to keep it clean. One point to add. Mine had the hole in the casing. Frank mentioned that there are some that don't have the hole. If that's the case youll have to drill a hole yourself. Good luck, Keith G0JLO

1 year, 8 months

FO 6M DXpedition Update

by Lance Collister

Hello Moonbouncing DXers! It is hard to believe, but in less than 2 weeks I hope to be QRV from the Austral Islands! I have gotten my booster Covid shot, so I am ready to head down there even though they currently are having quite a difficult time with the Covid Delta Variant. All the special paperwork has been done, and all that remains is that I pass a Covid test before boarding the plane here in Montana, and I pass another Covid test when I arrive in French Polynesia. I am trying to stay as isolated as I can until I get on the plane! As I already explained on my web site, I am planning to use Q65-60A for the 6m EME operations. Getting callers to spread out with Q65 could result in some confusion, so I have prepared an explanation of how to spread out effectively using Q65-60A. I hope that you will take the time to review this information and find it helpful: http://www.bigskyspaces.com/w7gj/Q65%20Offset%20Guide.pdf The planned operating schedules are shown on the DXpedition web pages. The only possible change I see at this point is that I MAY have to dismantle the station a day early at each DXCC, depending on the deadline for getting my excess baggage delivered to that airport for air freight...but I will know more about that after I arrive on each island. I have already paid for and booked all my excess baggage as air freight on the flights TO Rimatara and Hiva Oa, and there will be adequate time to meet the deadlines for those trips. It is just the flights FROM Rimatara and Hiva Oa that may require the air freight to be delivered the day before the flight to ensure it gets on the plane. I will provide further updates as things proceed. In the meantime, thanks for all of your support and effort, and I am looking forward to putting a record number of stations in the log from both DXCC! GL and VY 73, Lance -- Lance Collister, W7GJ(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K, KH8/W7GJ, V6M, T8GJ, VK9CGJ, VK9XGJ, C21GJ, CP1GJ, S79GJ, TX7MB) P.O. Box 73 Frenchtown, MT 59834-0073 USA TEL: (406) 626-5728 QTH: DN27ub URL: http://www.bigskyspaces.com/w7gj Skype: lanceW7GJ 2m DXCC #11 - 6m DXCC #815 - FFMA #7 Interested in 6m EME? Ask me about subscribing to the new Magic Band EME email group, or just fill in the request box at the bottom of my web page (above)! -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#297): https://groups.io/g/MagicEME/message/297 Mute This Topic: https://groups.io/mt/85967434/432738 Group Owner: MagicEME+owner(a)groups.io Unsubscribe: https://groups.io/g/MagicEME/unsub [w7gj(a)hotmail.com] -=-=-=-=-=-=-=-=-=-=-=-

1 year, 8 months

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Moon-net September 2021