Go Back   WorldwideDX Amateur Radio Forums > Citizens Band Related > CB Band and CB Radios


Amateur Callsign Lookup
Enter Callsign:

President Zachary T Recieve

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 02-11-2009, 02:07 PM
Cajun Invader's Avatar
Membership Moderator
iTrader: (2)
 
Join Date: Oct 2008
Posts: 470
Cajun Invader is on a distinguished road
Default President Zachary T Recieve


I have a President Zachary T base radio. I have notice that the receive in this radio is not up to par with my other radios. It seems like there is a lot of static in the receive. When I get a contact, even local, the static is carried in with their transmission. I can hear them but I can also still hear the static. Without a doubt I know it's effecting my receive on distant stations. I first noticed the recieve issue when I was in my mobile in the driveway. The receive in the mobile was much better. That makes no sense. A Wilson 1000 with better receive than a 24' Imax 30' up in the air?

At first I thought that it might be the antenna, coax or even some electrical interference in the house. I checked jumpers and coax and even used a homemade sniffer to try and find any electrical interference. Nothing.

I then hooked up a Connex 4300HP and the recieve was 100 times better. Then I hooked up a Uniden Grant XL and I had the same results.

I thought maybe the speaker was the culprit so I hooked up an external speaker. Nope, that's not it either.

I am assuming that it's some sort of an issue with the radio itself. I love the transmit on the President Zachary, it performs great with excellent audio and the limiter is intact but this receive is killing me. I know I live in the BYU with alligators but I don't want my radio to be one too. All mouth and no ears.

Anyone have any suggestions?


Reply With Quote
  #2  
Old 02-11-2009, 02:32 PM
Robb's Avatar
Yup
iTrader: (3)
 
Join Date: Dec 2008
Location: Silicon Valley CA, Storm Lake IA
Posts: 7,827
Robb is on a distinguished road
Default

I'm no tech. This is basically a Uniden radio; it should have GREAT recieve. I looked it up and couldn't find any known issues with the recieve. Doesn't mean that there isn't a problem. But I doubt it; these radios are all known as being at the top of the heap - just like the Grants and so on.

I gonna go out on a limb and say that this radio needs to find a decent tech to test for alignment - and/or perhaps a failed filter cap or circuit. You didn't say if the NB/ANL switch/filters did any good or even worked at all. Most likely that it need to be adjusted and aligned.
Just two cents...
__________________
BASE: Kenwood TS-2000, GAP Titan DX, Diamond X50A, Sirio SY27-4, and IMAX 2000.
MOBILE: Galaxy DX99V w/RF Limited CR-577 mic, Sirio Z-180. Yaesu FT-8800R & Diamond NR-770.

Reply With Quote
  #3  
Old 02-11-2009, 09:40 PM
Cajun Invader's Avatar
Membership Moderator
iTrader: (2)
 
Join Date: Oct 2008
Posts: 470
Cajun Invader is on a distinguished road
Default

The NB and Tone Hi and Low seem to be filtering.

Can anyone recommend a tech that would have the proper equipment to troubleshoot and align if necessary? I've come to realize just how important REAL techs with REAL training are.

Just Say No To Hacks

Reply With Quote
  #4  
Old 02-11-2009, 10:18 PM
Robb's Avatar
Yup
iTrader: (3)
 
Join Date: Dec 2008
Location: Silicon Valley CA, Storm Lake IA
Posts: 7,827
Robb is on a distinguished road
Default

I recommend Sparky's CB shop.
Sparkys CB Shack us your 1 Stop Source for CB & 10 Meter Radio Sales & Service
I don't know where you live, you may find something closer to home if possible.
I bought a radio from Sparky and he did the work to it; it was a good experience.
__________________
BASE: Kenwood TS-2000, GAP Titan DX, Diamond X50A, Sirio SY27-4, and IMAX 2000.
MOBILE: Galaxy DX99V w/RF Limited CR-577 mic, Sirio Z-180. Yaesu FT-8800R & Diamond NR-770.

Reply With Quote
  #5  
Old 02-11-2009, 11:26 PM
iTrader: (11)
 
Join Date: Apr 2002
Posts: 8,110
Moleculo has disabled reputation
Default

I'm pretty sure that Uniden didn't make the early President radios.

It's possible / likely that someone messed up all the receiver section cans. Do you have a signal generator? According to Defpom's site, L1-L8 are the receive tuning coils. It also mentions VR1. After looking at the schematic, I can verify that is the chain you would start with and, it looks to me like VR1 adjusts the SQL. Having the SAMS Fotofact on this radio would be some help and they're available online if you want to pay for it.

I'm guessing that someone just messed with the receive cans thinking that it was an adjustment for transmit. If you have a signal generator, you could attempt to test this yourself. If not, send it to someone.

Reply With Quote
  #6  
Old 02-12-2009, 12:59 AM
Cajun Invader's Avatar
Membership Moderator
iTrader: (2)
 
Join Date: Oct 2008
Posts: 470
Cajun Invader is on a distinguished road
Default

Great info Moleculo. Thanks.

Reply With Quote
  #7  
Old 02-12-2009, 04:17 AM
MisterFatty's Avatar
Poppin Fresh!
iTrader: (14)
 
Join Date: Jul 2008
Posts: 704
MisterFatty is on a distinguished road
Default

Was two versions of the Zachary T, Both made by Uniden, the early version is the UPD858 Chassis, the later version is pretty much a clone of the older 29GTL, also Early Zach = Cobra 89 XLR, Late Zach = 89GTL, except for cosmetics.

If you decide to try and tackle it yourself, just confirm early or late chassis, and I'll copy alignment procedures out of the Sams for you.

Reply With Quote
  #8  
Old 02-12-2009, 09:47 AM
iTrader: (11)
 
Join Date: Apr 2002
Posts: 8,110
Moleculo has disabled reputation
Default

MisterFatty,

Would you mind going ahead and posting both procedures? Others searching for the information will find this thread and will thank you later for it.

Besides, I'm pretty sure one or two locals around here have that radio so I would like to be able to help them out, if/when the need arises.

Reply With Quote
Reply

Bookmarks

Tags
president zachary t cb
Worldwide Radio Forum



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 09:08 AM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Worldwide Radio Forum