| Author |
Message |
    
Magyver
| | Posted on Saturday, January 05, 2002 - 11:41 am: | 
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I found this info on the net. Will it work?
Cut the trace at pins 10 and 12, isolating those pins. Solder a wire from pins 10 and 12 to the center of 2 SPDT, center-off toggle switches. Solder a wire from one side of pin 12's switch to the other side of the cut trace at pin 12. Next, run a wire from the other side of pin 12's switch to pin 11. Then, run a wire from one side of pin 10's switch the other side of pin 10's cut trace, and then run a wire from the other side of pin 10's switch to pin 17. NOTE: BE SURE to use SPDT center-off switches!! I'm not going to take time to type up the chart for now, but all you need to do is sit down with a frequency counter, go through possible positions, and write down the frequency for each channel on each combination.
Thats the Info I found. Any word would be appreciated. |
307
| | Posted on Saturday, January 05, 2002 - 7:58 pm: |
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The Uniden Washington is NOT like the Cobra 2000 in that the PLL (8719) is configured different. In the Washington to get upper AND lower channels , you need to change the oscillator frequency by using a kit , like Expo Kit or something similar. In the Cobra 2000 the frequency will be 26.815 to 28.045 with JUST the chip jump...
307 |
Scrapiron63
| | Posted on Saturday, January 05, 2002 - 8:34 pm: |
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Magyver: I have a chip conversion for the Uniden Washington, but it's not like you posted. Like 307 said, the best conversion for this radio is the expo kit, it will give you 39 below 40 and 39 above. If you don't want to go that route, You can add a few low channels, down to 26.815, by cutting pin 10 from ground, and install a spst switch on the cut. The other conversion I have takes two switchs, gives quite a few uppers and lowers, but does have some skips.
Scrapiron |
Jyd
| | Posted on Sunday, January 06, 2002 - 9:29 am: |
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thats funny,no channel kit or any sort.just two switches and some wire my 142 cobra will go from 26.175 to 28.045 |
Magyver
| | Posted on Sunday, January 06, 2002 - 4:46 pm: |
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307, Scrapiron63,
OK, It's an MB8719 chip
So, what, if any, xtra channels can I get without the Expo kit or changeing crytals? please be specific(detailed pictures would be nice) HAHA!! If I can add xtra channels what will they be? I do not have a freq counter.
I'm still learning. I added talk back and a conex/echo board, that I took out of my Cobra 25. That was alot of trial and ERROR!!
thx,
Magyver |
307
| | Posted on Sunday, January 06, 2002 - 7:24 pm: |
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Still it will go either low or high , I can't remember but only ONE way without a kit. Ground pin 11 on the 8719 and see which way it goes , I think LOW...But you see pin 10 is already grounded and will not go HIGH because of this..(or v/v)
307 |
Scrapiron63
| | Posted on Sunday, January 06, 2002 - 9:34 pm: |
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Magyver, do you have your email in your profile, if you do I will scan my diagram and directions, and email them to you. Just to add the lows down to 26.815 is a simple operation. When you cut or isolate pin 10 from ground, the radio will drop in frequency, channel one will be 26.815. You can wire a switch to connect the cut, and it will be regular 40 again. This conversion I have for low and upper channels, does require changing the 11.1125 crystal to a 11.3258, but thats a common crystal.
Then with the conversion, you will have the same lowers as above, and upper channels to 28.045. It does skip from 27.405 to 27.455. Its gonna be hard for you to put extra channels in withput a freq counter, I would hate to do it like that. It also takes a little re-alignment for the extra channels. I'll be glad to send the information, then you can decide. Scrapiron |
Magyver
| | Posted on Monday, January 07, 2002 - 6:48 pm: |
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307, Scrapiron63,
Thx for the info.
Scrapiron63,
Yes, my email is there. Anxiously awaiting the data. And thx's again.
Magyver |
Dang
| | Posted on Sunday, July 28, 2002 - 11:24 pm: |
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I have a uniden Washington,It transmite a chrup when I key the mic. Has anyone else had this problem ? How can I solve this. Thanks----dang |
307
| | Posted on Wednesday, July 31, 2002 - 8:39 pm: |
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Are you using a 4 wire D-104 in the 5 wire Washington? If so that is why. The Audio Return and the RX return are isolated in a 5 wire , a 4 wire shorts them together and when the mic is released you hear a pop...
307 |
2600
| | Posted on Wednesday, July 31, 2002 - 11:34 pm: |
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Whoa, is this thread called "Uniden Washington Freq Mod without Chip???" or is it "without chirRp?". Can't resist giving this one away.
Pull TR45, a 2SA733 in the back about an inch to the left (your left) of the REAR END of the audio chip. Just pull it out, don't let excess solder bridge across the empty traces. If I explain why, I'll just get carried away. Just try it, and see if I'm right.
I annoyed a few people on the air by asking them "how ya like your Washington base?", before they had said anything at all about what they were talking on. Wanted to know who told me. "The radio did!" I would reply. Of course, you can always put TR45 back in.
73 |
Taz
| | Posted on Wednesday, July 31, 2002 - 9:16 pm: |
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My neighbor had that prob, it made a boooop when he keyed the mic, and yes it was a d104 |
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