Hello
I had similar problem after i buyed used Eagle. The seller opened the Eagle to
make some pictures. I had swr Problem on nearly all qrgs. The CW Sound was
disturbed. I opened the Eagle and reconected all Connections especialy the
connections to Tuner. This was the Problem ! My Eagle works today like new.
Vy 73 and hny Chris de Df8wl
Von meinem iPad gesendet
> Am 01.01.2020 um 20:59 schrieb Gary Follett <dukeshifi@comcast.net>:
>
> Lots of good suggestions already posted.
>
> Don’t overlook the possibility of a heat-induced failure of a capacitor or
> anything else that could affect final amplifier or driver bias. Improper bias
> can cause LOTS of harmonic distortion and, into a resonant load, presents a
> high SWR. Try testing the radio, when it is acting up, into a resistive dummy
> load to see if this kills the high SWR. Since the dummy load is not resonant,
> the harmonics from the radio will not appear as reflected power so no
> elevated SWR will be seen.
>
> Gary
>
> W0DVN
>
>> On Jan 1, 2020, at 11:58 AM, Bob McGraw K4TAX <rmcgraw@blomand.net> wrote:
>>
>> Yes, coax jumpers do go bad from all the wiggling and jiggling, connecting
>> and disconnecting. And some are just pure crap to start with.
>>
>> Also any PL-259 must be more than finger tight. I use a pair of 4" Channel
>> Lock pliers to snug mine. That solves many many problems.
>>
>> I use my antenna bridge on 144 MHz and a dummy load to test my jumpers. I
>> wiggle, jiggle, pull and push. If the SWR flickers, I chop the PL-259 off
>> and start with a new piece of coax and a new connector. It isn't worth
>> trying to save a questionable connector or piece of coax.
>>
>> 73
>>
>> Bob, K4TAX
>>
>>> On 1/1/2020 11:32 AM, Byron Cordes via TenTec wrote:
>>> Let’s hope for the best. Bad coax jumper Bad pl259 antenna , ground
>>> connection on antenna . Do you have different antenna ?
>>> I just had a bad coax a few months ago.
>>> 73s Byron AC9PA
>>>
>>> Sent from my iPad
>>>
>>>> On Jan 1, 2020, at 11:13 AM, 1291jim@gmail.com wrote:
>>>>
>>>> Happy New Year All,
>>>>
>>>> I have had an issue with my Eagle happen twice now.
>>>>
>>>> Issue:
>>>> - Eagle loses tuning and SWR starts going crazy and jumping all over the
>>>> place
>>>> - Will not tune with inboard or outboard tuner
>>>> - Returns to normal operation after I shut in down for a while
>>>>
>>>> Background:
>>>> - Has only happened when I have been operating for several hours and during
>>>> a 20 min+ QSO, (so lots of sending) and both times on 40M
>>>> - Eagle felt warm but not hot
>>>> - Antenna is an EndFed (Alpha Antenna J-Pole Sr)
>>>> - Without tuning on 40M SWR is 2.6 : 1
>>>> - Normally tunes to 1.0 or 1.1 : 1 with outboard or internal tuner
>>>>
>>>> 1st occurrence:
>>>> - I had been operating for 3-4 hrs
>>>> - Eagle was running 100W through an MFJ Intellituner Model 993B that tuned
>>>> SWR to 1.1 : 1
>>>> - SWR started jumping all over the place
>>>> - MFJ could not tune it
>>>> - I assumed it was the MFJ Tuner, shut it all down.
>>>>
>>>> 2nd occurrence: (last night)
>>>> - Had been operating several hours at 100W
>>>> - Eagle again through MFJ Tuner when SWR started jumping all over
>>>> - This time I bypassed the MFJ tuner and tried to tune with the Eagles
>>>> internal tuner
>>>> - The internal tuner could not tune the antenna and SWR continued going
>>>> nuts
>>>> through the attempted tuning process
>>>>
>>>> This morning after a rest, rig tunes FB with outboard or inboard tuner.
>>>>
>>>> Pulling it from service now.
>>>>
>>>> Any advice would be appreciated.
>>>>
>>>> HNY ES 73 DE W6JIM
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
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