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Pages: Prev 1 ... 5 6 7 8 9 [10]
 91 
 on: Yesterday at 02:44:41 PM 
Started by N5MOA - Last post by KH6DC
Looks like they've moved from Tromelin to Andabar/Nicoman.  What's next, Navassa?

 92 
 on: Yesterday at 02:44:38 PM 
Started by BRIANBURNS - Last post by VE3LYX
It has been a good day here in the shack. I heard WA2PJP tuning up and then he connected with Joe  (kJJ???) I had tried a shot with my single tube 45  Am transmitter. They had heard my carrier and asked me to try again. This time we were successful and had a short three way. I was running my loop modulated single 45 tube TNT. Distance ATCF 323 miles. Band was quiet but apparently very good. This old 1920s style rig has been my most successful for Glowbug low parts count AM.
In fact my DX60B on my linear is I am told only marginally better on the S meter. It was with that info told to me last spring by a ham in Maine that made me decided to try it with the 45 tube rig alone and leave the Dx60B off.  I use a long wire singe wire end fed. matching the rig to the antenna is the big trick. You have little to start with so cannot waste anything.
Contact was on 7290 early afternoon EST. It is a real thrill using this lil rig.
don


 93 
 on: Yesterday at 02:41:09 PM 
Started by N5MOA - Last post by AF3Y
Jammers and lids going crazy for the past hour on VU4KV 30M CW.

AMAZING Angry

73, Gene AF3Y

 94 
 on: Yesterday at 02:25:55 PM 
Started by KD0GES - Last post by KD0GES
I bought a TenTec 238B antenna tuner to replace my Amp Supply AT-1200 tuner so I could get a higher watt amplifier.
My antenna is a 80 meter loop antenna fed with ladder line from a 4 to 1 balun designs balun with about 25 feet of lmr 400 coax from a FL-7000 amplifier.
When I use the AT-1200 the SWR remains low when I use the amplifier after tuning the antenna with 20 watts from the radio.
When I use the 238B the SWR goes high when I use the amplifier after tuning the antenna with 20 watts from the radio.
I'm curious why the 238B performs so poorly compared to the AT-1200.
Id appreciate any help to make the 238B work better.
Thanks
Dale KD0GES   

 95 
 on: Yesterday at 02:10:40 PM 
Started by KD9AXI - Last post by KD9AXI
I posted earlier on problems with my AL 811 amp but due to work could not answer all questions so lets try again.  Unit was working fine until started blowing 8A fuses. Replace all 811 tubes, no longer blows fuses.  When I tune it I have 1700 volts plate voltage, with stby/oper switch in operate position, no input from radio I have 110ma plate current. I then apply enough exciter to get 100ma grid current. When you then adjust plate control for maximum output, nothing happens, the output does not vary. Unit operatines normally in standby mode passing 100 watts power to watt meter. Any help would be greatly appreciated. Thanks W9AXI

 96 
 on: Yesterday at 02:03:08 PM 
Started by KG5EJU - Last post by N3DT
Yeah, nothing wrong with full shielding. That's why I'm thinking about going to FSJ4-50B instead of the RG-8X or 9086. Neither has full shielding. I just happen to have a bunch of the stuff and got a bunch of N connectors for it cheap and also happen to have a bunch of flange silver plated N females to replace the SO239's with. same form factor too.

 97 
 on: Yesterday at 02:01:41 PM 
Started by MM0NDX - Last post by EI2GLB
If you can't what hope have the rest of us over here Andy,



I am very excited to participate in this DXpedition. The boat costs are extreme and I kindly ask anyone here to please donate and also please approach your clubs about a donation.

I need TI9 for a new one myself but we will feel great joy giving out ATNOs and new band and mode fills to the DX Community Worldwide

Just donated. Not too confident I'll get through during the course of the dxped, but I'll enjoy trying  Grin

 98 
 on: Yesterday at 02:01:14 PM 
Started by K6LCS - Last post by K6LCS
THANK YOU, Eham-mers, for your support! This was fun ... AND supportive
of AMSAT-NA, too!!!

Clint K6LCS

 99 
 on: Yesterday at 01:47:39 PM 
Started by K9WW - Last post by WA7PRC
This project is an accident waiting to happen.  Look around and find a tree trimmer and ask one of his guys who climbs if he wants to make a few bucks on a weekend.  A $50 bill can save your life. And I am real serious about this advice.

73 and STAY SAFE,
Russ
^ ^ ^ THIS ^ ^ ^

When I wanted to hang a wire in the top of my Cedar tree, I wasn't feeling up to it, and hired a 'Norvegian' tree trimmer. I supplied him with a nice 3" diameter Nylon + Stainless pulley. He attached it to the top of the tree using a 1/4" Nylon rope w/ heavy rubber hose. He ran the antenna support rope down alongside the tree trunk, where I attached a counterweight. That was a dozen years ago, and it's still in FB shape. The cost was a ONE TIME investment.

vy 73,
Bryan WA7PRC

 100 
 on: Yesterday at 01:38:53 PM 
Started by AE7IS - Last post by WA7PRC
l'ld love to pick one up bryan.  Any idea where i could find such a thing at the price you mention?  As an aside, I went to RS today looking for a watt meter.  Guy tried to point me to the multimeters??.  needless to say they had none.

Not being critical, but it sounds like you need to read up on what you need and where to buy.  Get yourself a good AVG/PEP reading watt meter, (read: NO MFJ). And good heavens, stay out of Radio Shack. You can buy used meters on www.qth.com/swap all the time.

I have the FL2100B amp and using a watt meter makes tuneup fast and easy. Good luck!
My post was in regard to locating an oscilloscope so he can see if/when he's flat-topping on SSB/AM. NO meter will tell you that.

Frank: I resent the info. Let me know if you still didn't receive it.

vy 73,
Bryan WA7PRC

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