Search found 56 matches

by G3ZQH
Sat Mar 27, 2021 2:52 pm
Forum: Transverters
Topic: Thetis DRIVE CONTROL IN TRANSVERTER MODE
Replies: 11
Views: 1495

Re: Thetis DRIVE CONTROL IN TRANSVERTER MODE

Hi Jeff Yes, I have observed exactly the same as you when setting up my transverters. Very confusing initially when I was adjusting the VHF PA gain settings. The gain value I settled on was 55.0 for my 2m and 4m transverters. I was able to make a compromise setting to have about two drive units for ...
by G3ZQH
Sun Mar 21, 2021 11:38 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: Using Pure Signal on ANAN 10 with a transverter
Replies: 6
Views: 5705

Re: Using Pure Signal on ANAN 10 with a transverter

Hi Geoff and others interested in transverters and Pure Signal Has anyone made any progress with implementing PureSignal with a 70MHz or 144 MHz transverter using an ANAN rig? I am successfully using transverters with my 200D, but the quality of the SSB TX signals is so much worse than I am used to ...
by G3ZQH
Tue Mar 16, 2021 4:58 pm
Forum: Transverters
Topic: XVTR TX OUT 28MHz signal purity?
Replies: 5
Views: 414

Re: XVTR TX OUT 28MHz signal purity?

Hi Volker Now I have done some IMD measurements. On the Ukrainian XVTR the best I see is IM3 -30dBc, IM5 -38, IM7 -47 at gain=50. This is at 1-1.5W out, which is what I need to drive my 70MHz PA. Actually there was little difference in IMD with the 200D gain settings over 40 to 70 range at 1W from t...
by G3ZQH
Mon Mar 15, 2021 11:39 am
Forum: Transverters
Topic: XVTR TX OUT 28MHz signal purity?
Replies: 5
Views: 414

Re: XVTR TX OUT 28MHz signal purity?

Thanks Volker Yes, you are right the VHF gain does directly effect the XVTR signal- I should have realised this! For HF we adjust gain to correct the power output (to 100 drive=100W normally) but what do we adjust gain for at VHF? I can't find any information. I can see the effect on XVTR power out ...
by G3ZQH
Sat Mar 13, 2021 11:40 pm
Forum: Transverters
Topic: XVTR TX OUT 28MHz signal purity?
Replies: 5
Views: 414

XVTR TX OUT 28MHz signal purity?

28_70 MHz Transverter output spectrum.JPG 200D XVTR TX 28 MHz spectrum.JPG I noticed some unusual peaks in my 28/70 MHz transverter TX output. As well as the main 70MHz peak I also see peaks at 14, 28, 42, 56 and 84 MHz from the transverter- some at -25dB down from the main peak (picture attached)....
by G3ZQH
Tue Mar 02, 2021 5:05 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: On what card are PTT out transistor 2N7002K transistor ?
Replies: 3
Views: 412

Re: On what card are PTT out transistor 2N7002K transistor ?

I can answer my own question now! I had to look at the magnified pictures of the control board very carefully, Q2 is near the centre of the PCB (upper board) next to J11 and is slightly obscured by a connecting lead. Picture here for future reference.

73 Dave G3ZQH
by G3ZQH
Tue Mar 02, 2021 4:09 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: On what card are PTT out transistor 2N7002K transistor ?
Replies: 3
Views: 412

Re: On what card are PTT out transistor 2N7002K transistor ?

Hello Leif I also have blown my PTT and need to replace the 2N7002K in my 200D with Orion board. I have the board out, but I cannot locate Q2 on the board. Did you manage to make your replacement and if so can you help me locate the 2N7002K? I have attached a photo of where I think it should be on t...
by G3ZQH
Sat Feb 20, 2021 2:53 pm
Forum: Transverters
Topic: Ukrainian transverters- anyone tried with ANAN radio?
Replies: 18
Views: 1155

Re: Ukrainian transverters- anyone tried with ANAN radio?

Perfect! Thank you Phil and Scott. Now I have full TX inhibit. I don't know how I missed this firmware update. I've been using v1.8 for a long time.

I still have the problem with 100Hz spurs on my 70HMz TX signal from the transverter, but that is another problem, not for this forum.

73 Dave G3ZQH
by G3ZQH
Fri Feb 19, 2021 11:55 pm
Forum: Transverters
Topic: Ukrainian transverters- anyone tried with ANAN radio?
Replies: 18
Views: 1155

Re: Ukrainian transverters- anyone tried with ANAN radio?

Hi Phil Where did you find the download for Orion_NP_v1.9_pre3metis.rbf? I am on v1.8. I can't see at the usual download location on Github. Is it a special version? Can you send me a copy if you have it? I have the transverter working well now with just two problems. Firstly the unwanted TX on 28MH...
by G3ZQH
Wed Feb 17, 2021 8:12 pm
Forum: Transverters
Topic: Ukrainian transverters- anyone tried with ANAN radio?
Replies: 18
Views: 1155

Re: Ukrainian transverters- anyone tried with ANAN radio?

HI Volker Thanks. My settings on XVTR tab are the same as yours. My 200D has slightly different settings on the Ant/Filters page as below but I believe with the same effect as yours. I am beginning to wonder if the 4m band has any activity! Usually I would al least expect some local FM but all I see...
by G3ZQH
Wed Feb 17, 2021 12:46 pm
Forum: Transverters
Topic: Ukrainian transverters- anyone tried with ANAN radio?
Replies: 18
Views: 1155

Re: Ukrainian transverters- anyone tried with ANAN radio?

Now I have my 70 MHz Ukrainian Transverter built and boxed. So far RX is not working, but I have TX output. The board is well built, but the main problem is with interfacing since there are no RF connectors attached to the board and the output pins are very small and difficult to make soldered conne...
by G3ZQH
Sun Jan 31, 2021 12:05 pm
Forum: Transverters
Topic: Ukrainian transverters- anyone tried with ANAN radio?
Replies: 18
Views: 1155

Re: Ukrainian transverters- anyone tried with ANAN radio?

Just to wrap up this thread for now. After much searching I have decided to buy the Transverter Store 1ppm TCXO 28/70MHz board. This is less than £50 UK including postage. This is the only unit for 70MHz where I feel confident that the TCXO will be included. I'll report back after I have it working ...
by G3ZQH
Sat Jan 30, 2021 9:07 pm
Forum: Transverters
Topic: Ukrainian transverters- anyone tried with ANAN radio?
Replies: 18
Views: 1155

Re: Ukrainian transverters- anyone tried with ANAN radio?

Thanks Volker for the information. It is a bit confusing about the different versions of very similar PCB 'Ukrainian' transverters- I'm not sure I trust all the specifications given on eBay. Have you tried digimodes JT65 or FT8 with the transverters. I wonder if the drift is a problem? A few are quo...
by G3ZQH
Sat Jan 30, 2021 10:35 am
Forum: Transverters
Topic: Ukrainian transverters- anyone tried with ANAN radio?
Replies: 18
Views: 1155

Re: Ukrainian transverters- anyone tried with ANAN radio?

Hi Volker That is very helpful, many thanks. I see that the boards you used are improved with fewer old style inductors. I was looking just at the Transverter Store, but clearly there are other similar items on eBay which are harder to find. I can't see if the units you listed had a TXCO- this would...
by G3ZQH
Fri Jan 29, 2021 8:58 pm
Forum: Transverters
Topic: Ukrainian transverters- anyone tried with ANAN radio?
Replies: 18
Views: 1155

Re: Ukrainian transverters- anyone tried with ANAN radio?

OK Tony, I see the specs seem quite good. Possibly a bit more sophisticated than I need compared with the cheap and cheerful Ukrainian PCB. But I am interested. Maybe PM me a price to see where we're at. Good to know that it works with your 7000 Mk2.
73 Dave G3ZQH
by G3ZQH
Fri Jan 29, 2021 6:26 pm
Forum: Transverters
Topic: Ukrainian transverters- anyone tried with ANAN radio?
Replies: 18
Views: 1155

Re: Ukrainian transverters- anyone tried with ANAN radio?

Hi Tony I'll PM you about the ME4T- I believe this is the older HA1YA unit. For the purpose of this thread (and others who might be interested) it would be useful to hear of your experiences with the transverter. I've been using an RX-888 (RX only) to explore 2m and 4m, both new bands for me. Intere...
by G3ZQH
Fri Jan 29, 2021 5:00 pm
Forum: Transverters
Topic: Ukrainian transverters- anyone tried with ANAN radio?
Replies: 18
Views: 1155

Ukrainian transverters- anyone tried with ANAN radio?

I'm considering trying 2m and 4m transverters with my 200D. There are some very cheap options (~US$60) available from here: https://transverters-store.com/70mhz_tcxotr.htm (Transverters Store- Ukraine). Has anyone tried these? The latest versions seem to have a TXCO to cure a drift problem and bette...
by G3ZQH
Fri Oct 23, 2020 10:25 pm
Forum: Thetis
Topic: Thetis 2.8.11 Released!
Replies: 231
Views: 42474

Re: Thetis 2.8.11 Released!

Just to note that my 200D is running very smoothly with the recent updates to Thetis (up to 2.8.11). There seem to be a couple of notable improvements in stability as far as I am concerned, and this is with VAC and Pure Signal. I've always had stability problems with VAC (sequence errors and dropout...
by G3ZQH
Thu Jun 25, 2020 5:38 pm
Forum: PowerSDR mRX
Topic: Noise blanker/reduction settings?
Replies: 14
Views: 3412

Re: Noise blanker/reduction settings?

Hi Tony I have my NB threshold set on 15 and have not changed any of the NB Times (all set to 0.01 ms). Tried a few settings and found this to be best. I must admit that once I saw the fragmentation affect by NB on the FT8 waterfall, I assumed the decodes would be badly affected, so I didn't actuall...
by G3ZQH
Thu Jun 25, 2020 3:55 pm
Forum: PowerSDR mRX
Topic: Noise blanker/reduction settings?
Replies: 14
Views: 3412

Re: Noise blanker/reduction settings?

Hi Scott I understand what you are saying about noise- what I have is not atmospheric noise, but power line noise might be a possibility. I wish I knew more about the nature of the noise. It comes in the direction where there are many houses, a few factories, a building site and so on and would be d...
by G3ZQH
Wed Jun 24, 2020 5:37 pm
Forum: PowerSDR mRX
Topic: Noise blanker/reduction settings?
Replies: 14
Views: 3412

Re: Noise blanker/reduction settings?

Hi Kerry OK, interesting. We seem to have different types of noise, though I wouldn't have thought this would affect the noise cancelling function. I was surprised that my doublet seems to RX well on 6m during Es propagation, though obviously not as good as the 6m yagi. I tried to use a 160m Beverag...
by G3ZQH
Mon Jun 22, 2020 5:04 pm
Forum: PowerSDR mRX
Topic: Noise blanker/reduction settings?
Replies: 14
Views: 3412

Re: Noise blanker/reduction settings?

Hi Kerry Great result with diversity on 6m. I have a similar problem on 6m with a 10-15dB interference from a specific beam heading. I can't achieve your results- no more than a few dBs of improvement at best using diversity. What did you use for your RX2 antenna? Of interest is that the noise I hav...
by G3ZQH
Wed Jan 22, 2020 12:17 pm
Forum: Digital ("Virtual") Audio
Topic: VAC/audio problems on 200D
Replies: 14
Views: 4904

Re: VAC/audio problems on 200D

Hi All Another update on my VAC stability after the suggested changes. Change to 1024 buffer size helped but I still had audio dropouts several times in a day. I tried ticking 'stereo' but this made no difference that I could tell. Next I upgraded to VAC 4.62 (thanks Richie for this suggestion) and ...
by G3ZQH
Tue Jan 21, 2020 5:10 pm
Forum: Digital ("Virtual") Audio
Topic: VAC/audio problems on 200D
Replies: 14
Views: 4904

Re: VAC/audio problems on 200D

Hi Scott, Rob, Richie Great information, thanks to all. I’m using VAC 4.60 and had earlier problems installing 4.62 but will try that again. If that doesn’t work I’ll move to Voicemeeter Potato as Scott suggests (may be better anyway). My 200D was stable today for 8 hours with only one ‘audio’ crash...
by G3ZQH
Mon Jan 20, 2020 11:13 pm
Forum: Digital ("Virtual") Audio
Topic: VAC/audio problems on 200D
Replies: 14
Views: 4904

Re: VAC/audio problems on 200D

Hi Rob That is helpful. I'll try running at 1024 buffer size and see if it improves stability. Separately (not wanting to change two things at the same time) I'll investigate mono/stereo as well. I'll report back on this. I'm generally very happy with the recent improvements to the Thetis user inter...
by G3ZQH
Mon Jan 20, 2020 4:32 pm
Forum: Digital ("Virtual") Audio
Topic: VAC/audio problems on 200D
Replies: 14
Views: 4904

Re: VAC/audio problems on 200D

Hi Scott Thanks, I have made the attachments visible in my post now. I have evaluated two basic VAC settings over several months- one with the resampler fully on (all boxes unticked) and one with the 'force' boxes ticked. I didn't notice much difference in stability between these two settings over p...
by G3ZQH
Mon Jan 20, 2020 12:14 pm
Forum: Digital ("Virtual") Audio
Topic: VAC/audio problems on 200D
Replies: 14
Views: 4904

VAC/audio problems on 200D

200D P2v1.9, Thetis 2.6.9, PC Windows 10, VAC 4.60 on my set-up I need some help with Thetis stability, particularly when using digi modes (JTDX, WSJT). I have intermittent problems with VAC audio which causes Thetis to crash. This is usually accompanied by under/overflows in VAC and a visual distor...
by G3ZQH
Thu Sep 12, 2019 10:02 pm
Forum: Thetis
Topic: 2.6.8
Replies: 565
Views: 150118

Re: 2.6.8

200D running 1.8 Orion firmware om Windows 7. TX bug to rteport. 2.6.8 works great on RX. However on clicking TUN or MOX or PTT it crashes out. Tried resetting database, but still the same problem. Have been using 2.6.7 for a while. This is reasonably stable but I still have occasional VAC problems ...
by G3ZQH
Mon Jun 03, 2019 7:08 pm
Forum: Protocol 2 Firmware (all radios)
Topic: CW sidetone problem 200D
Replies: 0
Views: 3118

CW sidetone problem 200D

Anyone had a problem with sidetone with P2 v1.8, Thetis 2.6.7? I have been using CW recently and I have noticed a few differences compared with previous versions of P2: 1. I cant't adjust the CW sidetone audio level. This used to be possible in the transmit menu under TX AF. It is currently too loud...
by G3ZQH
Mon Apr 29, 2019 8:57 pm
Forum: Protocol 2 Firmware (all radios)
Topic: 200D Protocol 2 users: what say you?
Replies: 87
Views: 36291

Re: 200D Protocol 2 users: what say you?

Hi Rob
I tried your settings- not too good for me and I had many over and underflows (1000s). I experimented with various settings and this one below was the most stable with my 200D.

Anan 200D Audio VAC1.jpg
Anan 200D Audio VAC1.jpg (138.85 KiB) Viewed 11492 times


73 Dave G3ZQH

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