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 91 
 on: Today at 06:39:31 AM 
Started by N3QE - Last post by W6GX
Well, high SFI is now my nemesis.  I don't need or do I care about the high bands.  I only care about the low bands at the moment.  But when there's a dxpedition I welcome the high SFI Grin  And perhaps someone should let Monk Apollo know that the higher bands are sizzling at the moment Smiley

73,
Jonathan W6GX

 92 
 on: Today at 06:34:40 AM 
Started by N3QE - Last post by N3QE
I loudly proclaimed earlier this year that we had already blown our collective solar wad and the solar conditions were going to head nowhere but downhill after the wonderful 2013/2014 contest season peak.

Instead of the doldrums, CQ WW SSB and CW were just spectacular (CW especially on ALL BANDS) and we had really good common-daylight conditions in ARRL 10M test with SFI around 150-160 , and since then SFI has only gone up. It is at 185 right now and there are so many sunspots I fully expect it to reach 200 in the next couple days!!!

 93 
 on: Today at 06:33:34 AM 
Started by N5PG - Last post by N2RJ
FT5ZM I would say is a standout and would easily win. The rest should get some recognition though. They truly went above and beyond.

 94 
 on: Today at 06:31:20 AM 
Started by NZ4Z - Last post by W1VT
I worked WAS on 10M over the contest weekend.  My last three states were IL, PA, and MT.  Grin

I put up a low Moxon rectangle at 19 ft to work short scatter paths that might be missed by my dipole at 40 ft.  

OTOH, the day after the contest I worked K0AY in Mongomery County, PA, on 10M SSB with that dipole!  

Perhaps the most important advice is to listen for the weak stations--while you might get lucky with a loud meteor scatter contact, more than likely you will need to dig someone out of the noise--not easy when the DX stations are really, really loud at the same time.  

Zack W1VT

 95 
 on: Today at 06:31:01 AM 
Started by KD0ZGW - Last post by KD0ZGW
Everyone thx for replies.  I'll work on getting a dedicated low band antenna.

 96 
 on: Today at 06:26:33 AM 
Started by KK5DR - Last post by KB3TXH
Hi, I went to the yahoo group page because it seemed to be something I might want to participate in.

I expected to read some posts to get a feel for the members agenda, but it seems like I have to join the group before I can read messages.
  I don't think I am willing to share my private information to join a group that I know nothing about.

I am going to pass for now.....Jim

 97 
 on: Today at 06:25:32 AM 
Started by W9DEC - Last post by W0BTU
Think of someone sending CW so poorly, that it sounds as if they were rapidly raising and lowing the lid of a metal garbage can to do it. That's what came to mind when I first read that word in an old QST or CQ.

 98 
 on: Today at 06:25:22 AM 
Started by NR5P - Last post by NR5P
I want about 5 dual band radios vhf and UHF for various vehicles and locations at my property.

I would like at least 25 watts

I only need about 5 repeaters programmed. Dont need anything except a volume, squelch and scan control really.

It needs to be able to use vhf and UHF.

I want to save money over a dual band mobile

I see options for sale sometimes but don't know if I need to stay away from some things for reasons I may not know.

It kind of feels like getting into ham radio for the first time and buying the first radio.

 99 
 on: Today at 06:11:57 AM 
Started by KC2YU - Last post by KC2YU

I will look into those products as well as circulators.

Thanks again!

Comprod Communications - 406-512 MHz 8dB Quad 1/4 Wave Dipole

This is a 4-bay quasi omni with an advertised gain of about 8db.  It's just over 10 feet long.  It's about $900 to $1000. 

Comprod Communications - 406-512 MHz 5dB Dual 1/4 Wave Dipole

This is a 2-bay with about 5 db gain.  It's about 86 inches and sells for about #600 to $700.

ALso keep in mind that the stated frequency range of these antennas is not as wide as stated.  These models cover 406-512 but only in 10mHz ranges.  In otherwords, you need to order the band split you need.  While a 450-460 antenna will look ok SWR wise in the 440 ham band, you probably won't like the pattern.  So, if buying a used antenna, make sure it's made for the frequency you intend to use it for.

There are many many others out there.  I have never used a Comprod so I can't give any first hand data as to how it performs or how rugged it is, but it is marketed to commercial communications companies.

As for the circulator, your internal duplexer is likely just bolted into the chassis and is connected with either BNC or N connectors.  The circulator probably won't fit inside the cabinet.  The repeater configuration you describe isn't intended for the type of installation you describe.  It's more for small footprint low RF environment.  These are typically used for places like construction sites, facilities for in-buiilding comms, campuses, etc.  For use in high RF places you would want a pass-notch duplexer or pass only duplexer.  But, try what you have and see how it works out.


I would suggest extensive reading on repeater-builder.com..








 100 
 on: Today at 06:09:25 AM 
Started by KB0VHS - Last post by KA1GJU
The Argent Data Systems OT (Open Tracker) series will do just what you want. With the flip of a switch (panic button) it can change parameters. ie Callsign, path, frequency of TX reports, telemetry, etc. It's the Configuration Select feature.

Homebuilders of aircraft have been using this feature for years. One little DPDT toggle switch can select OFF-ON-EMERGENCY.

But then you have to get past all the licensing issues. After all, it's Amateur Radio, not Commercial Radio.

Kriss KA1GJU-X  X=INT(9)

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