OZ9 LO locking
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John Fell
I have used one of these with no issues for several years but today it refuses to lockup .The onboard RED led is slowly flashing with 10MHz ref applied but the Kuhne 5.7 MK2 TVTR LO does not attempt to be locked . Anybody got the setup destructions for the OZ module ? 73 John G0API |
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David Redman
John, Without changing anything are you sure your 10MHz is strong enough Normally with no 10MHz the OZ module issues a quick flashing light. Mine has worked fine unless my 10MHz is not strong enough Dave G4IDR On Sun, 2 Oct 2022, 18:32 John Fell, <john.g0api@...> wrote:
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geoffrey pike
OZ5N website reports the dreaded 404 Anyway even though the led is flashing it probably is locked, its worth looking at the control voltage to the varicap and see if its about 2V I think i have the instructions but someone may find them before me, sometimes i had to cycle the supply to the pll on off independently of the VCO supply to get lock cheers Geoff GI0GDP
On Sunday, 2 October 2022 at 18:36:41 BST, David Redman <davidredmang4idr@...> wrote:
John, Without changing anything are you sure your 10MHz is strong enough Normally with no 10MHz the OZ module issues a quick flashing light. Mine has worked fine unless my 10MHz is not strong enough Dave G4IDR On Sun, 2 Oct 2022, 18:32 John Fell, <john.g0api@...> wrote:
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John Fell
Hi Dave, Yes first thing I checked and I tested with two separate 10GHz sources each in the +10dBm region on my Spec Ann. The LO is running with influence from the OZ unit and can be set using the DB6NT coil next to the Xtal , but the LO does not remain fixed as the unit is pulsing it's LED . 73 John On Sun, 2 Oct 2022 at 18:36, David Redman <davidredmang4idr@...> wrote:
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John Fell
Thanks Geoff - will look at the 2V in the morning . If all else fails I have a 116MHz synth I should be able to reprog and bin the existing LO and the OZ board . 73 John
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John Fell
Oops ! That should be 10MHz ref. not 10GHz - too much EME . John
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Pete - GM4BYF
I may have the original info on these. Need to dig back through
archives. 73 Pete GM4BYF On 02/10/2022 22:22, John Fell wrote:
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vry 73 Pete GM4BYF |
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John, Good Morning
I have an OZ5N Auto-PLL board surplus to requirements if it helps you “brand new in original bag” – no data sheet.
Happy to post out if of use?
73 Bob, G1ZJP
Sent from Mail for Windows
From: John Fell
Sent: 02 October 2022 18:32 To: UK Microwaves groups.io Subject: [UKMicrowaves] OZ9 LO locking
I have used one of these with no issues for several years but today it refuses to lockup .The onboard RED led is slowly flashing with 10MHz ref applied but the Kuhne 5.7 MK2 TVTR LO does not attempt to be locked . Anybody got the setup destructions for the OZ module ?
73 John G0API
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David Redman
for those needing the original instruction see the attached Dave G4IDR On Mon, 3 Oct 2022 at 06:23, Bob_G1ZJP <R_Offer@...> wrote:
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John Fell
Thanks Pete , Now have the data so can proceed to fault find . 73 John G0API
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John Fell
Thank you Bob, Very kind offer . I now have the data so will proceed to fault finding - may be back to you ! 73 John G0API On Mon, 3 Oct 2022 at 07:23, Bob_G1ZJP <R_Offer@...> wrote:
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John Fell
Thank you David . Just what I was looking for so can move on to fault finding . 73 John G0API On Mon, 3 Oct 2022 at 07:50, David Redman <davidredmang4idr@...> wrote:
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Thanks for all expressions of interest in the OZ5N Auto-PLL board ~ the unit is now taken.
73 Bob, G1ZJP
From: John Fell
Sent: 03 October 2022 09:47 To: UKMicrowaves@groups.io Subject: Re: [UKMicrowaves] OZ9 LO locking
Thank you Bob, Very kind offer . I now have the data so will proceed to fault finding - may be back to you !
73 John G0API
On Mon, 3 Oct 2022 at 07:23, Bob_G1ZJP <R_Offer@...> wrote:
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