Tom,
Set your Astron 35 to 13.8 volts. 13.8 volts has become the standard
supply voltage for today's rigs.
Bob, K8LR, [log in to unmask]
On 11/2/2015 8:02 PM, Tom Behler wrote:
> Don:
>
> I did a cleaning of all parts of the DC power cord assembly last night, but
> my output voltage and power are still somewhat reduced.
>
> Will try to do an even more thorough cleaning, probably this week-end, and
> will also see if I can adjust the RS35 supply voltage upward at least a
> little bit.
>
> Will keep you and everyone posted.
>
> Tom Behler: Kb8TYJ
>
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of Don Breda
> Sent: Monday, November 02, 2015 7:19 AM
> To: [log in to unmask]
> Subject: Re: Interesting TMV71A Issue
>
> Hi Tom.
>
> The problem is this.
>
> Your tm-v71 a power cable.
>
> I have the same exact problem from time to time.
>
> On the cable are two fuse holders.
>
> Take each one apart, remove the fues from both sides of the cable so the
> fuse is free in your hand.
>
> Now Clean both ends of the fuse.
>
> Clean all the metal area on the fuse very very well.
>
> Now do the same for both ends of the fuse holder itself.
>
> Now put it back together and repeat the procedure on the other fuse and
> holder.
>
> You will be good to go for quite a while after that.
>
> Don
>
>
>
> On 01-Nov-15 7:03 PM, Tom Behler wrote:
>> Steve:
>>
>> Just as a way to do another test, I fired up my TS590, my MFJ 998
>> auto-tuner, and my ALS600 on 75 meters, and keyed up in CW mode. All
>> of this equipment is connected to my Astron RS35, via a rigrunner.
>> And, when I did the test, I also had my TMV71A on, as I typically do
>> when operating here in the shack.
>>
>> Everything worked flawlessly.
>>
>> MY SWR was at 1.3 to one. My output power according to my LDG TW1
>> watt meter was 495 watts, and my reflected power was 8 watts.
>>
>> I would think if the issue was the power supply, things would have
>> tripped off when I did this test.
>>
>> So, now, I guess it's onto thoroughly checking out my TMV71A DC power
>> connections and fuses.
>>
>> Tom Behler: KB8TYJ
>>
>>
>> -----Original Message-----
>> From: For blind ham radio operators
>> [mailto:[log in to unmask]]
>> On Behalf Of Steve Dresser
>> Sent: Sunday, November 01, 2015 6:46 PM
>> To: [log in to unmask]
>> Subject: Re: Interesting TMV71A Issue
>>
>> Tom,
>>
>> This might be a power supply issue. Check to be sure your power
>> supply is delivering enough voltage. It may need to be adjusted, or
>> there may be a problem with the voltage regulator. I'd check
>> connections and fuses first, and then see if the supply voltage remains
> constant and at the right value.
>> Try resetting the radio if you want, but I doubt it will make any
>> difference.
>>
>> Steve
>>
>> ----- Original Message -----
>> From: "Tom Behler" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: November 01, 2015 18:17
>> Subject: Interesting TMV71A Issue
>>
>>
>>> Hi, everyone.
>>>
>>>
>>>
>>> Well, last night, I got rid of the gremlin that was causing issues
>>> with my ability to play selected audio files using Winamp, but now,
>>> another gremlin has appeared in my shack.
>>>
>>>
>>>
>>> This time, I'm experiencing a very strange problem with my Kenwood
> TMV71A.
>>>
>>>
>>> The problem occurs mainly when trying to transmit with high power on
>>> 440, but it happens occasionally when trying to do so on 2 meters as
> well.
>>> Basically, when I transmit with high power, especially on 440, the
>>> rig shuts off for a split second, but then comes back on. It's
>>> almost as if the rig is not happy transmitting on high power for some
>>> reason, again, especially on 440.
>>>
>>>
>>>
>>> I discovered this issue late this afternoon, as I was doing my usual
>>> monthly tests of equipment, antennas, etc., at least as best as I can
>>> from here in the shack at the home QTH.
>>>
>>>
>>>
>>> In trying to diagnose the problem, I have done the following things
>>> so
>>> far:
>>>
>>>
>>>
>>> 1. My first thought was that something has gone wrong with my
>>> outdoor Diamond X200 VHF/UHF antenna, which is fed with RG9913 coax
>>> and is on the roof of my house at a height of approximately 35 feet.
>>> I took SWR, as well as forward and reflected power readings using my
>>> TW2. Both on 2 meters and 440, adjusting the meter for each gand as
>>> I went. my SWR's on each gand are between 1.2 to 1 and 1.3 to 1. On
>>> medium power, my forward power on each band is between 9 and 10
>>> watts, and my reflected power is either at 0 watts on 2 meters, or
>>> point 2 watts on 440.
>>>
>>>
>>>
>>> 2. I then tried switching jumpers between my TW2, and the Diamond
>>> X200 connection on my MFJ window feed through panel. Again, no change.
>>> Admittedly, I haven't swapped all jumpers out, but at least the
>>> initial jumper swap didn't change the results.
>>>
>>>
>>>
>>> 3. I then did a V F O re-set on the TMV71A, with again, no change in
>>> my results. I'm a bit reluctant to do the full re-set, but may do so
>>> as a last resort, since I have the TMV71A programming cable, and also
>>> have all memories and menu settings saved in a data file for the rig.
>>>
>>>
>>>
>>> One other thing I might try is to see if this happens with the TMV71A
>>> that I typically use when camping out at the RV. It is here in my
>>> shack in a box for the winter.
>>>
>>>
>>>
>>> Before I go too crazy with all this, though, I'd like to know whether
>>> anyone else has experienced this issue, and if there are other ideas
>>> out there that I might want to try.
>>>
>>>
>>>
>>> Thanks as always for the help.
>>>
>>>
>>>
>>> Tom Behler: KB8TYJ
>>>
>>>
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