[Yaesu] Anyone else with FT1500M spurious output?

Wed, 2 Apr 2003 22:51:40 -0600

Please two points for clarify for me:

Is the bad behavior limited to data modes only, or does it occur with 
voice use also?  Is it just a burst at beginning of transmission or 
condinuous?

If it is chronic to all units, sounds like a recall would be in order.  
Fat chance, I suspect.

KoDCF/Tony

Quoting Bob Marzari <[email protected]>:

> AES Milwaukee confirmed that the units tested in their shop all
> exhibited
> the same spurious condition.
> 
> If you are using one of these radios in data service, APRS, etc.,
> you
> probably should get it next to a spectrum analyzer.
> 
> Bob, W3PT
> 
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On
> Behalf Of Bob Marzari
> Sent: Saturday, March 22, 2003 10:01 AM
> To: [email protected]
> Subject: [Yaesu] Anyone else with FT1500M spurious output?
> 
> 
> 
> Our club, the Central Pennsylvania Repeater Association, Inc. owns
> two
> FT1500M xcvrs. One is used for APRS and the other for our IRLP node.
> Both
> are less than a year old.
> 
> The FT1500M used for APRS was kerchunking repeaters with packet
> bursts for a
> 30 mile radius when it was tracked down to our APRS node.
> 
> The radio was swapped out with another brand and brought to my shop.
> Viewing
> it's output on an HP-8920 analyzer found that on the "initial key up"
> it had
> spurs almost as strong as the desired frequency across a wide portion
> of the
> VHF spectrum. It is not necessary to have a TNC connected to the ACC
> port to
> produce the problem. Just keying the microphone in a rhythm like a
> TNC will
> produce the problem.
> 
> It is still under warranty so I sent it to the CA Yaesu facility in
> the
> beginning of January 2003. I explained the problem and they sent it
> back
> stating in writing that "There is nothing wrong with the radio." In
> fact, I
> had my spectrum analyzer set too wide and I should narrow it down to
> 25kHz.
> :)
> 
> I put the radio back on the HP-8920 and the spurs were still there. I
> video
> taped the screen changing the span out to 10MHz showing that the
> radio is
> indeed spurious. Packed up the radio and sent it back again.
> 
> This time there was no saying they could not witness the problem.
> However,
> it is still not resolved and after almost 3 months we are still
> without the
> radio.
> 
> At this point I decided to look at the other FT1500M that we use for
> our
> IRLP node. It too exhibits the same spurious output on initial key
> up.
> 
> Other club members that own FT1500M models brought them to club
> meetings and
> every one of them tested spurious.
> 
> Yaesu tells me they are waiting for Japan to make a decision.
> 
> I would not be writing this if Yaesu service would have resolved
> this
> problem in a timely manner. And yes, I too have called the main
> switchboard
> number, got the recording, pressed zero and waited 3 or more minutes
> on MY
> nickel and no one picked up.
> 
> 73
> 
> Bob, W3PT
> 
> 
> 
> Moderator: Ray Brown, KB�STN
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