main@UltralightDX.groups.io

Re: SRF-59 alignment

Well, I'm afraid the alignment of this SRF-59 did not bring it up to the expected level of performance. I was able to pull the low end back down to where it should be in the tuning range.

By Jay Heyl · #3078 ·

Re: SRF-59 alignment

Thanks, Gary. I'll give it a go. -- Jay

By Jay Heyl · #3077 ·

Tecsun R9012 Lemon Variants-- More Info

Hello All, Rob Ross and I have both received yellow/ orange colored R9012 analogmodels from the eBay seller "tquchina," which have proven to be substandard incomparison to the black R9012 models

By Gary DeBock · #3080 ·

Re: Another Tecsun ULR found - the R-203T

The FM sensitivity of my 911 is pedestrian at best. Perhaps it's the spec ... perhaps it would benefit from tweaking just as the AM section does.

By m_a_schuster · #3076 ·

Kaito WRX-911 1st Impressions

My WRX-911 arrived yesterday morning from J&R and so far I'm quite impressed. First, the audio from the speaker is much better than I anticipated, on a par if not better than my Eton e100.

By earthkopp · #3075 ·

Re: Two Yellow-Colored Lemon R9012's Received

D1028Gary@... wrote:*************************************************** Gary.........The R9012 I received from Tquchina was a ORANGEone.......Maybe that's the same one you are calling Yellow??

By robert ross · #3073 ·

Re: New file uploaded to ultralightdx

Gary, thanks so much for posting such detailed instructions and photos. I wonder, do these mods affect sw performance at all? 73, Keith Beesley Seattle WA

By keith beesley · #3069 ·

Re: Two Yellow-Colored Lemon R9012's Received

Rob, I'm really sorry you received one of these orange-yellow lemons. Theblack R9012's from "dpmega" seem to be much better out-of-the-box, and muchbetter fully aligned. If it will make you feel

By Gary DeBock · #3074 ·

Re: SRF-59 alignment

Hi Jay, The SRF-59 has two adjustments to set the AM frequency limits-- theuppermost trimming capacitor on the back of the tuner (to set the high limit,usually to 1750 kHz) and the red-slugged

By Gary DeBock · #3072 ·

Re: New file uploaded to ultralightdx

Hi Keith, Thanks for your comments. These adjustments are not really modifications--they simply peak the AM circuitry for maximum sensitivity, and provide full Xband coverage. As such, they do not

By Gary DeBock · #3071 ·

Two Yellow-Colored Lemon R9012's Received

Hello Guys, Apparently some of the newly manufactured Tecsun R9012 AM-FM-SW analogportables have some QC variations compared with others, and if you are still"sitting on the fence" about purchasing

By Gary DeBock · #3070 ·

Re: Butchering my SRF-59

That's a good point, Gary. The one I aligned lost the dial pointer when I added the tuning reduction gear so I didn't have to worry about it. That thing could be a bit tricky to get positioned just

By Jay Heyl · #3068 ·

New file uploaded to ultralightdx

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the ultralightdx group. File : /CHINESEANALOGAMPORTABLEALIGNMENT111.doc

By ultralightdx@... · #3067 ·

Re: Butchering my SRF-59

John: Don't worry about aligning the SRF-59. It's the easiest of all the ultralights to align. Once you open the case everything is there in front of you. We've all had doubts before aligning our

By bbwrwy · #3065 ·

Re: Butchering my SRF-59

Jay, If it can be screwed up, believe me, I'm the guy to do it. But with my luck, I may cross-wire the '59 in such a way that I'll hear Neptune on it. If I do, I promise I'll post what I did here.

By John Cereghin <jcereghin@...> · #3064 ·

Re: Butchering my SRF-59

Be not afraid, John. I'm very far from an expert at this. I've open a few radios before, but that's about it. I found the SRF-59 very easy to work on. Before you begin, take a moment to observe the

By Jay Heyl · #3063 ·

Butchering my SRF-59

Reading Jay's post has emboldened me to put one of my 3 SRF-59s "under the knife". I have one turkey that needs help badly, so if I do horrible things to its innards, I won't feel too bad. Now I'm a

By John Cereghin <jcereghin@...> · #3062 ·

Another Tecsun ULR found - the R-203T

Hi all: While waiting in Anchorage to see if Mt. Redoubt ash will let my plane take off, I found the Tecsun R-203T. It looks like the R-202T, but has a different FM sensitivity specification. The

By satya@... · #3061 ·

Re: SRF-59 alignment

Jay, Mine isn't quite that bad although it is shifted too far "upband". On FM, I can get TV channel 5 audio at the low end of the band, and it just squeezes in 107.9 at the top end. And yes, we

By Jim <va3jno@...> · #3060 ·

SRF-59 alignment

I bought a couple refurb SRF-59s a while back so I could experiment without putting my "good" one in peril. One of the refurbs was just as hot as the first one I purchased retail. The other one was a

By Jay Heyl · #3059 ·

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