Call Search

New to Ham Radio?
My Profile

Friends Remembered
Survey Question

DX Cluster Spots

Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement

donate to eham
   Home   Help Search  
Pages: Prev 1 2 3 4 5 [6] 7 8 9 10 Next
 on: Yesterday at 08:25:23 PM 
Started by KE2KB - Last post by WB6BYU
I don't think that's the problem.  Usually a crystal will fail entirely - they don't
usually "go soft" with time.  (Though they may shift in frequency.)

Is there an oscillator coil adjustment for each band?  That would be the first
place to check.  There are also some tuned circuits in the driver / RF amp area that
are band-switched, and could be out of alignment.  It's possible that that crystal
is a bit more sluggish than the others and the gain of the tube has dropped, but
that would best be fixed by adjusting the feedback capacitors.

One thing you can try doing is to use your signal generator in place of the
heterodyne crystal oscillator on each band and see if that equalizes the output

But I suspect that the HW-101 uses hermetically sealed crystals, and opening them
up to make adjustments should be a very last resort, as the frequency may shift,
and the crystal may not age as gracefully in the future.  I might consider it if the
crystal was totally dead and I was going to throw it away anyway, but since it seems
to be working somewhat I'd check the other bandswitched circuits first, then play
with the oscillator and see if it needs additional feedback first.

 on: Yesterday at 08:20:16 PM 
Started by CHRISDX - Last post by CHRISDX
thanks kerry. new version.  now onto the circuit.

also, I can get a 0-100uA meter from china for about $14, so I may do that. for now I will try with the 0-3mA meter.

IMG_20171016_230925 by Chris P, on Flickr

 on: Yesterday at 08:20:07 PM 
Started by VE3VEE - Last post by WA2VUY
This is what VU7T sounded like right after my qso:

Very strange conditions (A index just recovering) on 40M this evening in that there were only a couple of weak EUs that could be heard but VU7T had a decent signal on 7105 qsx 7160. Worked 30 min past my sunset 2239z.

 on: Yesterday at 08:11:19 PM 
Started by KW4GT - Last post by KW4GT

If your router/extender has a detachable antenna, buy a cheap Wi-Fi Yagi on ebay, one for each end of the 'circuit'.

That's along the lines of what I was thinking about. (ethernet cable won't be acceptable, it'll be driven over if I were to lay it on the ground not to mention having to run under power lines). 

Stupid question...... say I hook up a yagi to my wireless router........what attaches to the antenna on the far end? 

 on: Yesterday at 07:52:19 PM 
Started by W2IRT - Last post by N3QE
Got them on 160 tonight. Pretty TOUGH. One of the hardest ones I've worked. And I've seen some pretty elite DXers in that pileup tonight, so it must be worth something on 160.

Their signal on 160M is HUGE and so is the PILEUP!!!

Conditions on 80M and 160M are supreme.

 on: Yesterday at 07:51:52 PM 
Started by N4DCT - Last post by N4DCT
I have an Icom 737A that has worked beautifully until today. Now, when I turn the rig on it starts making all of these clicking noises and I noticed that both antenna selector lights are lit and the screen is blinking rapidly. Eventually, the screen goes blank but the clicking persists.

I turned the radio off, did a master reset, nothing changed. I unplugged everything from the back to make sure my interfaces weren't going haywire. No change.

I hope this is a simple fix as I definitely do not have money to buy a rig at this point in life.

Does anyone have any ideas?

 on: Yesterday at 07:50:42 PM 
Started by W2IRT - Last post by N2RJ
Got them on 160 tonight. Pretty TOUGH. One of the hardest ones I've worked. And I've seen some pretty elite DXers in that pileup tonight, so it must be worth something on 160.

 on: Yesterday at 07:39:13 PM 
Started by W9IQ - Last post by K9AXN
Uh huh.

If the push is removed, the 100 watts stays stuck at the antenna feedpoint,
the point just before the antenna. Coaxial length not a factor.

Glenn is taunting. Good job man.

Alrighty now here's one. A plane attempts to take off on a conveyor belt moving
at a rate exactly in the opposite direction to the plane's forward thrust.

Will the plane take off or stay on the belt motionless.

Kraus --- have you ever tried that?  I guess it depends on whether he had the brakes on or off.  Off he's airborn, on he just wrecked a good machine and ran over the guy that designed the conveyer belt with the start switch at the wrong end.

GDay Jim 

 on: Yesterday at 07:34:13 PM 
Started by KB2WVO - Last post by KB2WVO
can a mod close this posting please..

ive had enough....

goin to find a good book and build a ncie warm fire. with the book. poof. i wont be reading no mor epostings in this post. ty for all the help

you all know who u r..

 on: Yesterday at 07:28:59 PM 
Started by W9IQ - Last post by K9AXN
1.668uW from the feed line plus that which is stored in the antenna fields if resonant.

Good one Glen.  This is after two Vodkas --- anything is possible.

Regards Jim

Pages: Prev 1 2 3 4 5 [6] 7 8 9 10 Next
Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!