[Kenwood] 599 twins

[Ron]

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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