[Kenwood] 599 twins

[Fortra]

Hi Martin and Ron,

yes Ron you are right. Those are the trap blocking circuits. From service 
manual it is written as follows:
================================================
Parts lists of X-44-0020-00 (RF UNIT)

L31-0010-05 8,3 Trap coil
L31-0011-05 8,8 Trap coil
L31-0012-05 12,3 Trap coil
================================================
Unfortunately Martin, the signs and marks of the above components are not 
very clear in the service manual as they should be. Thus, i am pretty sure 
those are the traps for above purpose.
Both the service manual for T-599 and R-599 could be send to you, for 
copying fee plus postage. If you are not in terrible hurry I could provide 
them within next two weeks.
Let me know please!

Best regards and tons of enjoyment,

Nermin S58DX



----- Original Message ----- 
From: "Ron" <w8ron at stratos.net>
To: "Martin Sole" <msole at loxinfo.co.th>
Cc: <Kenwood at mailman.qth.net>
Sent: Tuesday, October 10, 2006 3:17 PM
Subject: Re: [Kenwood] 599 twins


> Hi Martin.
>
> Not sure of the 599 but in the FT-101 ,the traps would block mixing 
> components from proceeding further down the IF strip.
> ---
>
>
> Martin Sole wrote:
>
>> I like older radios and recently bought a pair of early 599 twins from a 
>> friend. There are issues but nothing that has stopped me from enjoying 
>> them so far. I have a couple of questions and would be interested to hear 
>> what others think.
>>
>> The receiver is very nice but it does seem prone to overload. I have a 2 
>> element quad at about 80 feet and we live in a very flat swampy area. 
>> There are some nearby high power broadcast stations and even with an ICE 
>> high pass filter I get some problems on 20 metres. The 20/40/60 
>> attenuator is a little too much so I am thinking about modifying it to be 
>> 6/12/18. Anybody tried this? I have also learned that the squelch 
>> control, not something I really need, can be re-wired as the RF gain 
>> control which is located inside the set, good idea?
>>
>> I notice in the schematic that there are three traps in the RF circuit, A 
>> seies trap, L1 & C1 and a parallel one, L2 & C2 on the input to the RF 
>> amplifier together with another series trap, L4 & C13 on the output of 
>> the first mixer. The manual makes no mention of these or what frequencies 
>> they are supposed to stop, Any ideas? Image trap?
>>
>> For the transmitter I need a source for the rubber belts and I'm am 
>> wondering about drilling the front panel to re-locate the mic gain and 
>> carrier level controls. Is this likely to reduce the radios value? Are 
>> they collector items? Mine is not by any means mint but it is very nice.
>>
>> I would also be interested in a silver speaker if anybody has one.
>>
>> I don't expect great things from these radios but they are fun and give 
>> much pleasure.
>>
>> Thanks
>> Martin, HS0ZED
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>>
>
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