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76  eHam Forums / DXing / RE: How close to the ocean do you need to be to have an effect? on: June 01, 2011, 11:41:21 PM
The question specified "ocean".
Can anyone comment if similar effects can be had operating by "fresh-water" shores?
Examples would be any the Great Lakes or the Finger Lakes in New York State or say a river.
73 Jerry KM3K
77  eHam Forums / Digital / RE: SignaLink USB for dummies? on: May 30, 2011, 11:18:06 AM
If you continue to have a problem, call SignaLink.
If I recall correctly, they are available Mon, Wed and Fri in the late afternoon.
The phone-number, days and times are in the paperwork that came with your SignaLink.
I write from personal experience that they'll stay with you on the phone until you have the system working.
73 Jerry KM3K
78  eHam Forums / Computers And Software / RE: shielded-cable used on old style keyboards? on: May 30, 2011, 11:10:24 AM
Well, after a couple days here with no replies, I put my question to the Yaesu FT-950 group on Yahoo since I'd be connecting this cable to my FT-950.
The answers there have that I should not expect a shield on the cable; after all, a shield would only add cost to the product.
To quote one reply, "I used a similar cable for PSK31 with a Rascal. it has no shield, works great but i use ferrite to keep out RF." I'll use that idea.
So on now to the next problem.
73 Jerry KM3K
79  eHam Forums / Computers And Software / shielded-cable used on old style keyboards? on: May 28, 2011, 12:08:41 AM
It is well known that SignaLink-USB only does AFSK for RTTY.
So, to get FSK for true RTTY,  I bought a W3YY kit.
Since the kit does not include an enclosure, the connectors or cables, I'm shopping around for those parts.
One connector/cable, that I need, is a 6-pin male mini-DIN and 5-wire shielded cable.
I have in storage an old E-machines keyboard which was part of a computer system that I bought in 2000.
I noted that it has a 6-pin male mini-DIN connector (rather than the USB-connector seen on newer keyboards).
To find out if its cable was shielded and how many wires its cable had, I took it apart.
But I am unable to see if there is a shield on the cable because the end of the cable's jacket at the keyboard is covered up with shrink-tubing.
There are five wires coming out of the shrink-tubing.
So my question is, "Does anyone know if the old-style keyboard has a shield on its cabling?"
I should mention that I'm not about to butcher up my old keyboard; I have other plans for it.
Rather, I'd hunt around for a similar old style keyboard and get its connector/cable.
73 Jerry KM3K
80  eHam Forums / Elmers / RE: SWR questions on: May 13, 2011, 12:14:16 PM
Have you tried both radios into a dummy load using the same cable on each.
I concur that this should be the first step towards seeing if the two agree with each other in a reasonably close fashion.
73 Jerry KM3K
81  eHam Forums / Computers And Software / RE: using dual-monitors on: May 11, 2011, 09:42:03 PM
I don't know how much you've researched upgrading the laptop to Win 7, but please do a thorough job of that.  I was going to upgrade my XP HP laptop to Win 7 because I needed it to test some things on Win 7.  It turns out that the vendors are not providing updated drivers for the older laptops for Win 7.  So, you might find that something no longer works properly and there's no solution for it. 

After a lot of consideration about which direction to take on these dual-monitors, I've decided to not spend any money on a new computer.

1. I won't be using a dual-monitor set-up.
Instead, I'm going have two separate computers, each with its own display.
That way a CPU does not get stressed trying to handle two monitors.

2. One of the two computers would be my laptop.
I'm not going to up-grade the laptop to Win7; it'll stay with Vista.
Microsoft has a test, which I ran, that they say checks Win7's compatibility with existing hardware/software.
The test reported that a upgrade to Win7 would not know what to do with the laptop's built-in wireless-device or the HP-Deskjet printer.
So I'm not going to spend money on a upgrade that cannot use my wireless-device or my printer.

3. The other computer will be my old E-machines and I'll put a light Linux operating-system on it.
Eventually, I'd put Fldigi on it to do digital-modes.
I'd put a new monitor here.

4. This way, the left-over cash that I have goes towards getting a portable HF set-up…something I don't have right now.
It ultimately came down to this…I'd be a lot happier having portable capability rather than having a new computer.

I'd like to again thank those who provided replies; the replies weighed heavily in my deciding what direction to take.

73 Jerry KM3K
82  eHam Forums / Misc / RE: How to test a crystal filter on: May 04, 2011, 01:23:54 PM
Hello Dave KD2E,
To test the filter correctly, you'll need to know the termination-impedance(s).
That information might be hard to come by.
Normally, the termination-impedance is the same for input and output; rarely, are they different.
Then contrive the test-setup to provide those impedances.
You need to account for both the generator's impedance and the loading impedance.
Generally speaking, mis-terminating a filter will distort the passband shape.
If you can provide the filter's termination-impedances and your source and loading impedances, I'd be happy to work-up a test-schematic for you so that the filter can be properly terminated for testing.
73 Jerry KM3K
PS. As background....I used to design crystal-filters and lc-filters to pay the mortgage; when that was paid-off, I switched to working on crystal-oscillators.
83  eHam Forums / Computers And Software / RE: icon is not is the task-bar. on: May 04, 2011, 07:49:09 AM
There's probably an icon in the Sys Tray - look there. It's the little area on the bottom right next to the clock.

Thanks for the lead.
By itself, that wasn't the answer; however, it led me to a solution.

Here's what happened to fix the problem...
I right-clicked that icon and five lines of choices came up, one of which was "Hide when minimized" and that choice was checked.
Un-checking that choice fixes my problem.

I do remember checking that some weeks ago thinking that it would minimized the icon in the System-Tray; I did not know it meant the icon in the Task-Bar.

Anyway, thanks again.
73 Jerry KM3K
84  eHam Forums / Computers And Software / icon is not is the task-bar. on: May 04, 2011, 05:31:25 AM
I hope the moderator will allow this off-topic item.
My problem has just started in the past couple of weeks and I am stumped, really really stumped.
I'm running a desktop Dell Dimension B-110 (DE051, Intel Celeron 2.53 GHz, 1 GB RAM) with Windows XP, Home Edition, Version 5.1.2600 service-pack 3 Build 2600.
The problem is with Microsoft Outlook 2003 (11.8330.8333 sp3).
I open-up Outlook and read some emails.
I decide to open-up Google Chrome, so I minimize Outlook via clicking the "-" in the upper-right-corner.
Normally, an icon would show-up in the task-bar; but that no longer is happening.
You'd have no idea that Outlook had been opened and minimized.
I can open-up Google Chrome, minimize it, and its icon is in the task-bar; ditto for any other apps I want to open and minimize.
To get back to Outlook, I have to click on the shortcut-icon on the desktop.
I've tried everything I can imagine towards getting the Outlook icon to show-up in the task-bar.
Let me write that four people use this computer (my wife, two teenage grandchildren, & me), so anything could have happened along the way to cause this problem; the grandchildren don't use Outlook.
The problem becomes annoying when my wife wants to check her email while I'm using Outlook; even if I close Outlook, I have to power down the system in order to be able to open-up her Outlook.
To repeat....I'm stumped; I hope someone knows what got changed.
73 Jerry KM3K
85  eHam Forums / Elmers / RE: Rf Power-why has this become a menu item? on: May 02, 2011, 10:02:40 PM
I'm with you Scott!
Got rid of (actually, gave it away...) an otherwise nice FT-950 for that very reason.
Plus, if I remember right, the menu on that radio would only allow adjustments in 5 watt steps.  Couldn't adjust it for the exact drive level "I" wanted for my amp.
73, Jim/K7UNZ

Jim K7UNZ,

Sadly, your memory has failed you on this one.
Sadly, I have moments like that myself. Hi Hi.

Yaesu's FT-950 can be adjusted in 1 Watt steps from 5 to 100 Watts.
At least, that's the way mine works.

Is it possible that you were unaware that Yaesu has provided a front-panel switch (labelled an "C.S" for "custom-switch") that can be dedicated to one of the 118 menu selections?
The simple directions for use are on the manual's pg 37.
So, if power adjustment is important to a user, that adjustment could be available simply by pressing that button.

73 Jerry KM3K
86  eHam Forums / Elmers / RE: Surface Mount Soldering Tips needed. on: April 28, 2011, 07:52:42 PM
Except for the toaster-oven-idea, I'd second WB6BYU's comments.

I wonder what directions came with the kit concerning SMD parts soldering.

I had the good fortune to be professionally trained & certified in using a hot-air station. Based on that training, regardless of which method you decide on using, I'd first lightly tin the pads, even though the pads may be supplied already tinned.

This link http://en.wikipedia.org/wiki/Surface-mount_technology would give you some idea what size capacitor part you have.
I learned to do 0402 size parts; to do that size with a soldering-iron would be a challenge.
Hopefully your parts are larger.

Here is a link towards making your very own extremely small soldering-tip: http://www.instructables.com/id/Making-a-fine-tip-for-your-solding-iron-for-SMD-so/
I have not tried it but it seems reasonable.

Dispense a tiny amount of liquid-flux (rosin) onto the part and freshly-tinned-pad, then come in with the iron and solder.

I agree with Mark K5LXP; solder-wick is your friend.

73 Jerry KM3K
87  eHam Forums / RFI / EMI / RE: Interference with stereo/TV speakers in my home on: April 22, 2011, 08:20:37 PM
Oh, shoot!!!
I did not realize there was a page 2 to this thread.
Had I seen that, I would not have made my posting.
73 Jerry KM3K
88  eHam Forums / RFI / EMI / RE: Interference with stereo/TV speakers in my home on: April 22, 2011, 08:16:43 PM
Clearly, I don't get it.
Could you please provide some references I could use to learn what you're describing?
Apparently all the antenna and transmission line texts I have are wrong.
Mark K5LXP  Albuquerque, NM

Ditto here on your comments, Mark.
What I've seen in this thread so far does not square with Walt Maxwell W2DU's Reflections III; for example, page 2-4 #20; I'm sure there are other places to quote but that is the first one that comes to mind (it has been quite a while since I read the book).

So, I'm wondering if the feedline is coming away at a 90-degree angle to the antenna.
If not, then, according to W2DU, the feedline will have unbalanced currents and you may get RFI.

Additionally, here is a link to a great read by W7EL  http://www.eznec.com/Amateur/Articles/Baluns.pdf; as I see it, significant is the section "What causes system unbalance?"

73 Jerry KM3K

89  eHam Forums / Elmers / RE: Power Meter on: April 20, 2011, 11:36:11 PM
Ken K4EAA details a method to determine power-level using a dummy-load.
He claims his dummy-load design works to 100 W.
Link is http://k4eaa.com/dummy.html
The method assumes your DVM is accurate but those are pretty common and could be checked against other meters.
(Now that just gave me an idea to suggest for our club-meeting...set-up a simple dc-circuit and members could bring in their DVMs to compare readings towards getting a confidence level that their DVM is working ok.)

I think it'd be interesting to use the K4EAA method towards comparing the two power-meters mentioned by W4VR (at least to the 100 W level).

The usual disclaimer: I have no connection with K4EAA other than I'm a recent customer.
I've bought his kit of resistors/diode to make his dummy-load design.
As soon as I can find and buy the brass-plate, I can get started on building the dummy-load.
73 Jerry KM3K
90  eHam Forums / Computers And Software / RE: using dual-monitors on: April 17, 2011, 10:29:13 PM
Thanks to W8JX; even though I may not have used your suggestion, know that it certainly influenced my decisions.
So, after having considered at length very seriously those thoughts and visiting various sites/stores for prices/options:

1. First thing decided is to stay away from Dell for any purchases.
I should have gone with HP as I had done throughout my profession-career.

2. Secondly, I could get a new machine with Windows7 but, in thinking about it, I’ve come to realize that Windows is “so yesterday”; time for something new here.

3. So, even though the cash (via Christmas/birthday presents) is there to get a new computer, I’m just going to buy a new HP monitor ($99 at Walmart), pull the Emachines 466ID out of storage and put “light Ubuntu” on it to run Digipan and then, later on, Fldigi.
The new monitor goes with the Emachines.
The lure of Linux is enticing to me; it is fresh, new, different.
Sure, there’ll be a learning-curve but I see that as part of the fun.
The chance to do something Unix related is exciting.
Besides, I’ve read that part of the ham-radio hobby is supposed to be “nuts and bolts”.

4. I’ll upgrade the Dell laptop to Windows7 just to get away from Vista even though I’ll grumble forever about having to spend the money.

5. That’ll still leave plenty of cash to spend on antennas, coax, switches and other stuff.

Thanks again for the help.
73 Jerry KM3K
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