Have a great 2B but non-operational on 20 M - suspect the crystal, 10.5 MHz, as all other bands are sensitive and noisy. removed and replaced the crystal...
1676
tnham63
Jan 2, 2009 6:27 pm
To the List, I finally got My AC4R upgrade from Santa this year and put it in right away. Just a note to let all know I am another satisfied customer. The...
1677
billjhs
billjhs1
Jan 2, 2009 11:54 pm
Hello to all and Happy New Year. I am having a strange problem with my t4x/r4 setup on cw. It works fine on tune/am/lsb and usb. It just doesn't work on CW.. I...
1678
Dean Hemphill
dean_k5dh
Jan 3, 2009 1:22 am
Grant, The stock crystal for the 20m band is 18.0 MHz. A 10.5 MHz crystal can be used if it is inserted in socket "C". See your manual for details. I happen...
1679
Wiley Clarkson
wileyclarkson
Jan 3, 2009 2:32 am
Wink, Good timing on this post. I have an AC4R board ready to install on my work bench right now! I plan to do it when the next really cold weather hits and...
1680
Wiley Clarkson
wileyclarkson
Jan 3, 2009 2:40 am
My T-4XC is doing something similar but not quite the same. When I key up, I see momentary output but the relay will not stay closed. I can hold the key down...
1681
Garey Barrell
k4oah
Jan 3, 2009 2:58 am
Wiley - Make sure your ANTI-VOX isn't turned up too far. IF the transmitter works OK in TUNE mode, the problem is in the VOX circuitry. There is a diode/cap...
1682
Mike-K5VSE
pupule384
Jan 3, 2009 3:35 am
Congratulations on all you guys doing the AC-4 upgrade. When you've done enough of them, you will be able to do them in about 45 min. That's about what it...
1683
Dale Parfitt
w4op
Jan 3, 2009 4:26 am
Hi Floyd, I just saw your post regarding wierd AGC pproblems on your R-7. I had similar problems. No AGC in any setting except SLOW. I checked everything and...
1684
Wiley Clarkson
wileyclarkson
Jan 3, 2009 10:25 am
Garey, Thanks for the tip. I'll take a look at it in a day or two and try a little readjustment. I looked at the schematic several days ago and had the...
1685
Enrique Fernandez Gar...
enriqueeeeee...
Jan 3, 2009 5:48 pm
Happy New Year 2009 to the group! I would like some advice in which receiver to buy since I have seen you are real experts on Drake receivers. I am...
1686
kd5aq
Jan 3, 2009 7:42 pm
I have a R4A and would like to have a T4X with ps if I can fing one reasonable. Ron...
1687
Jerry Harley
Jharley
Jan 3, 2009 8:21 pm
Your antenna is going to have a lot to do with the noise. Horizontal dipoles will be quieter than verticals...
1688
Enrique Fernandez Gar...
enriqueeeeee...
Jan 3, 2009 9:16 pm
Thanks. Yes, I know about the noise and antennas. I have got a Wellbrook 1530+ loop antenna, it is very quiet, but in tropical and 49mb with the Drake it is...
1689
rrkrr
rrkbogie
Jan 3, 2009 11:46 pm
I have found the R8B to be susceptible to noise pickup from the AC power line. I found substantial improvement by adding a power line filter. Bob K4ERR...
1690
Wiley Clarkson
wileyclarkson
Jan 4, 2009 3:47 am
Well, I guess it was a good thing ordering that upgrade when I did, which I started working on this morning. I had my T-4XC on my old AC3 PS and was going to...
1691
Enrique Fernandez Gar...
enriqueeeeee...
Jan 4, 2009 11:57 am
I have put some ferrite cores clipped onto the cable but no improvement at all. I will purchase an AC filter then. I have been reading some reviews on eham and...
1692
py2xb@...
py2xb
Jan 4, 2009 3:01 pm
Dennis, Garey and everyone Happy 2009 to you all. Ihave been absent for few days. Indeed it was a "gassy" 6BA6 indeed which made all the trouble. For some ...
1693
w5rkl
Jan 4, 2009 6:44 pm
Yep, Wiley, a failed bias supply can create some pretty interesting things. It's surprising that quite a few hams don't realize this can happen, not only with...
1694
Tim Stotenburg
ki6nqt
Jan 4, 2009 7:29 pm
I have done both my ac3 and 4 ps with the upgrade. There was enough of a difference on the ac3 (color coded wires and components) to make me pay attention....
1695
Wiley Clarkson
wileyclarkson
Jan 4, 2009 7:57 pm
I guess I'll be ordering another upgrade before too long for my AC3 PS. I'm not much in to trying to save an old PS with old parts when something alot better...
1696
wa4zzw
Jan 5, 2009 1:50 am
I just lost one of these resistors in my L4B power supply. Their are two of them and I can see that one of them was replaced before I got the amp. It this a...
1697
Mike-K5VSE
pupule384
Jan 5, 2009 2:05 am
I had the same problem a couple of years ago. I replaced both of them at the same time, and within 3 months another went out. I finally did the power supply...
1698
WB7TXG
cvsteed
Jan 5, 2009 2:51 am
I'd like to extend a thanks to all the members on this board. The information contained in all the posts is worth its weight in gold! A special thanks to K4OAH...
1699
py2xb
Jan 5, 2009 10:24 am
Grant Before you replace the cristal try to replace the 6U8 Tube by another one or by a 6EA8. I had a similar problem with a "non working 10m crystal". All...
1700
querencias
Jan 5, 2009 6:57 pm
Fred, thanks for the tip -I'll give it a try as soon as I can dig up the tube 72 Grant...
1701
py2xb
Jan 9, 2009 2:14 pm
I have received Garey's CD for the Drake 2-B. Very nice collection of useful information plus a service manual with nice photos. Certainly a good help. Thanks...
1702
Wiley Clarkson
wileyclarkson
Jan 11, 2009 3:36 am
When I lost the bias voltage the other day, I was able to shut the transmitter off prior to a total destruction of the finals but it did weaken them and lower...
1703
Dan Galligan
w3rxo
Jan 11, 2009 3:39 am
Try RF Parts in Oceanside, or Carlsbad, CA. They still have a pretty good selection of many of the obsolete tubes, if my memory serves me correctly. Otherwise...
1704
Michael Schlicher
wb8ure
Jan 11, 2009 12:55 pm
Try Antique Electronic Supply out of Arizonia They sell matched tubes. Also Drake was known for using Sylvania brand tubes in their radios ... From: Dan...
