Icom 746Pro Fixed

I made a post a week or so ago about my Icom 746Pro not transmitting.  I stated at the time that I didn’t have time to work on it, so I was going to send it off to get fixed.

Well I looked around and found some reviews for Mike Nadeau – N1EQ.  They were all good so I contacted him about working on the rig.

 

Icom 746Pro

I have to say, from start to finish, Mike has one of the most professional service organizations I have worked with.  Being in the computer business, we have to send things off for repair all the time.  I would love to find a company as organized and responsive as Mike.

 

You have to request a time to send the unit in, so I did that and when the time was appropriate, we double boxed it and shipped it to Mike Fedex Ground.  I wish I knew why it takes so long to ship from the middle of the country to the East cost, but it took 6 days. to get to Mike.

He got it on Wednesday Afternoon and by Thursday morning at 8:47am my time, he had it fixed.  Here is what he found:

 

“As expected, your rig has the re-designed PA board with MOSFET finals. And it also has the latest factory upgrades to the RF and CTRL boards.

So far, it has been my experience that these late-production units are much more reliable (IC151 failures are rare). But for whatever reason (I assume a factory error), some of them had a 4.7-ohm resistor, instead of a 10-ohm resistor, in place of R3 on the PA board. And this causes the pre-driver FET (Q1) to overheat and eventually fail.

Anyway, this was the problem with your rig. So I replaced the pre-driver FET (Q1). And I replaced R3 with 10-ohm.”
He then added a clip heat sink since I do mostly Digital Modes.  He shipped it Friday and by the middle of this coming week, I hope to be back on the air with it.
So I would rate the experience with Mike a 5 star.  Just be sure to recognize that he only accepts online payments such as Paypal.

 

 

Good News on HR 607

FOR IMMEDIATE RELEASE

Contact:
Mike Lisenco, N2YBB
n2ybb@arrl.org

May 19, 2011, Massapequa Park, NY – A delegation of Amateur Radio operators from the Long Island / New York City area met this morning with Congressman Peter T. King (R-NY) to discuss his recent proposed legislation, HR 607, and its impact on Amateur Radio.

Congressman King said that he fully understands and appreciates the importance of Amateur Radio and the service it provides to the community, and that he would see to the modification of the bill so that the 420 – 440 MHz band would be excluded from the spectrum to be auctioned. The delegation included Mike Lisenco, N2YBB, ARRL Section Manager for New York City / Long Island (NLI), Peter Portanova, WB2OQQ, NLI Local Government Liaison (LGL), George Tranos, N2GA, NLI State Government Liaison (SGL), and Jim Mezey, W2KFV, NLI ARES Section Emergency Coordinator (SEC).

“The Congressman went on to explain that it was never his intention to remove the 70 centimeter band from Amateur use. He further asked us to `get the word out’ and inform the Amateur Radio community that 70 centimeters is not in jeopardy,” said Lisenco.

Lisenco, Mezey and Tranos spoke about the importance of Amateur Radio emergency communications while Portanova, who is also the local AMSAT representative, addressed satellite and other amateur use of the 70 centimeter band.

The Congressman was very receptive to the group, who also extended an invitation to attend Field Day locations in his District.

 

KE7VLC Amateur Extra Class
Orion Thrower

 

 

Weather Spotting

It has been another crazy week around the shack this week.  I got my Icom 746Pro sent off for repair and it is already on its way back.  I have a lot of un-ham related projects going on too.

So one of the projects worked on this week was getting started rebuilding the local ham pool available for spotting duties.  I know it’s late, but there has been some turn over in local emergency management and the local Weather Service Office.

We have meet with both and now have a plan.  We have two members who are going to man stations at the Weather Service and our shack at the Red Cross.  They will then call a Wx net during severe weather.

They are also working on procedures for call up and how to get the information to Weather Service personnel and Emergency Management.  We are really starting from scratch, since the system kind of fell by the wayside the last couple of years and we have no documented procedures from before.

The final step will be to call hams in the local and surrounding counties to try and get them to participate.  We will be recruiting two types of spotters.  The full blown kind that will go to specified locations and some that just report from their home QTH.  Most of the area that we cover is rural, so home QTH is almost as good as a roving spotter.

Wish us luck, anyone with experience in this would be encouraged to post a comment.

Icom 746Pro Sudden Death Syndrome

I had heard about it, but was hoping I would get lucky or they had fixed it.  Today, my 746Pro just quit transmitting.

Icom 746ProIt sits behind me and I mostly am doing JT-65 or PSK and just click and transmit.  Well this morning I tried making a couple of JT-65 contacts and couldn’t raise anyone.  I thought it was odd, but I had to get some work done and just moved on.

Later in the afternoon, I tried again to make some contacts.  This time still no go, so I turned around and looked at the 746Pro and no power out.  I checked my settings and every thing seemed correct.  So I moved up the band and tried to key it in AM mode, still nothing.

So I have to get it out of the cabinate and I suppose I will have to send it in.  I know I could fix it myself, but I just don’t have time to mess with it.  I also want this to be one of my reliable rigs, so I better do it right.

Let you know what I find out.

Look Ma, I made it myself

I have been following the 3D printer arena for a little over a year.  In some ways it reminds me a lot of RepRap Mendelthe “good ol days” of Amateur Radio.  A person has an idea, and all they have to do is spend a little time on the personal computer and render a drawing.  Then move the file over to the printer and in a few minutes viola, you have a working piece.

That version didn’t work, make a few adjustments and reprint.  For those of you that aren’t familar with 3D Printing, take a look at the following video for a really good example of what you can do with a 3D printer:

httpv://www.youtube.com/watch?v=u7h09dTVkdw

The video shows a more expensive commercial unit, but If you want to build your own, take a look at http://reprap.org for a place to start.

Keep an eye on my blog for some Amateur Radio Related products made with 3D Printing.

It’s Official – I am KBØASQ

KBØASQ License PlateI finally decided to get Amateur Radio plates for my pickup.  I have been holding off trying to decide if I wanted to get a vanity call sign.  I just couldn’t come up with anything that sounded good.

I even thought about going back to the first call sign that was issued to me back in 1978, WDØDXD.  Just didn’t seem like it was worth it to go and change everything.  So a couple of weeks ago I finally sent the form in to get the plates made.

I received a letter from the State of Nebraska saying my app was approved and that the plates would be at the courthouse after May 16th.  We had one of the first slow days at the business in a couple of years today, so I thought I would give them a call to see if they had come in early.  Sure enough they had them.  So I ran down and picked them up.

Now I really have to be careful driving.

Understanding, Building, and Using Baluns and Ununs

A couple of weeks ago, I had a post about needing to build a balun to use with my loop.   I am trying to do more remote operation, and obviously with a manual tuner it makes it difficult.   The manual tuner has a built in balun that allows me to use my loop with dual rg-6 coax.

Understanding, Building, and Using Baluns and UnunsI did a little research and found that many ham’s reccomended Understanding, Building, and Using Baluns and Ununs by Jerry Sevick, W2FMI.   I went on Ebay and found a copy for 49.00 and purchased it using Buy Now.  Well long story short, I never did receive the copy and after about 3 or 4 weeks Ebay refunded my money since the seller wouldn’t respond to my or their messages.

So I went back on Ebay and no copies were listed this time.   I checked Amazon and several people had copies, but most started at $150.00 or more.  So I went back and checked.  It was originally available from CQ magazine.   I went to their website and lo and behold, they just got in a new printing of the book.   So for $19.95 plus shipping you can purchase a brand new copy of it here.

I have my reading set out for me the next couple of nights.  I will let you know what I learn and more importantly what I build.

Voice of Victory (Part II) (1944)

Again for the Hallicrafters fans.  This is a follow-up to the previous post.
Hallicrafters SCR 299
I am alway amazed at what we were able to accomplish prosecuting the war.  I often wonder if we would still be able to do that today.  I hope we don’t have to find out.

I sure am glad the transistor came along.  That is one packed panel van. My guess you got to now your partner pretty good.

 

Genesis G59 Phase 8

In this Phase you construct the CW Monitor.  I am not active in CW now, but someday I want to brush up my CW skills, so it is nice the G59 includes this in the kit.

It is a pretty straight forward part of the kit and there isn’t anything special about its construction.  It should be an easy step.  Unless you are Allen.

G59 MK2 Phase 8I installed the resistors, capacitors and connectors without a problem.  Then I installed the IC’s.  That’s when I made the first mistake.  It was late, I was tired, yada, yada yada.  I put the 741 IC’s in the wrong spots.  Spent a half hour getting them back off the board.  I broke a couple of pins in each one, but at least I didn’t lift any pads up.  Long story short, I was able to get them soldered back into the correct places.  I had to solder the broken pins from the top, but they all seemed fine.

Last step was to make a couple of cables.  I was starting to dread making these, but I think I finally have a good system setup.  Bruce KF1Z told me he would just crimp the end of them to the wire and solder them.  I started to use my Helping Magnifier to hold them in place and solder them.  Then I would bend the crimps and push them into the holders, no crimping tool required.

So on to testing the CW Monitor.  I did as the website instructed and I got a tone, but it was more like a buzz.  I did a little research on the mailing list and found a message that said to use a jumper in KS1M.  Tried that and now I got at least a somewhat decent CW tone.  I researched the list further and found it was reccomended that you use a 2.8k resistor instead of the jumber.  I had a 2.7k 1/8 watt resistor so I tried that and was satisified with the results.

Then I tried to adjust the volume of the tone.  You are supposed to adjust R15M to set the volume.  I tried that but after several turns it didn’t seem to make much of a difference.  I posted a message on the Yahoo List, but before anyone responded, I backed R15M way out and then I could hear a change in the volume level.  apparently I turned it in too far and I was afraid to back it out too far, but that is what did the trick.

Then I went on to check the Iambic Keyer.  The trick here is you have to have GDSR set to CW and you have to have clicked on the start button.  I did that and now I have nice dits and dashes.  I don’t have a keyer, so I just used a stereo audio cable and shorted the ends to test it out.

Next on to Phase 9 the Transmitter.

Stupid Ham Shack Tricks 4

Another one of my new favorite tools to use in the Ham Shack.  The Helping Magnifier.  If you have ever had to  solder crimp connectors on to a cable or hold a circuit board vertically to desolder a connection, this is the tool for you.

Helping MagnifierI purchased mine over a year ago from Harbor Freight, Item #00319.  I know I have seen them at other hardware stores, so they shouldn’t be hard to find.  I have resisted the “I need a magnifying glass” for a long time, but at my age I finally had to succumb to the need for addtional help.  So I finally got it out of the package a few days ago and I really don’t know how I did with out it.

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