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Wanted: whip for Lowe HF-225 & advice on power supply
The 225 I just won on ebay turns out not to have the factory-supplied
whip, which I'd like to have because I like my radios to be complete and because it might come in handy. Lowe no longer ships to the U.S., and I don't know anybody in G.B. who might ship it for me. Besides, shipping probably would cost twice as much as the antenna. Any ideas for a source? The AC adapter also is missing. What's the best way to prevent a wall wart from creating a hum problem, or should I just get a real power supply (regulated, nonswitching)? Thanks. |
Wanted: whip for Lowe HF-225 & advice on power supply
On 23 Jan 2006 07:05:22 -0800, "Avery W3AVE"
wrote: The 225 I just won on ebay turns out not to have the factory-supplied whip, which I'd like to have because I like my radios to be complete and because it might come in handy. Lowe no longer ships to the U.S., and I don't know anybody in G.B. who might ship it for me. Besides, shipping probably would cost twice as much as the antenna. Any ideas for a source? Yeah.. Get a PL-259 and a piece of rod from the hardware store. Break out that old 50 W soldering iron and go nuts. |
Wanted: whip for Lowe HF-225 & advice on power supply
Yup, I realized that's all I need to do when I saw a photo of the rear.
But I think I'll pull out one of my old Weller guns. More authentic for a job like this. |
Wanted: whip for Lowe HF-225 & advice on power supply
Avery W3AVE wrote: The 225 I just won on ebay turns out not to have the factory-supplied whip, which I'd like to have because I like my radios to be complete and because it might come in handy. Lowe no longer ships to the U.S., and I don't know anybody in G.B. who might ship it for me. Besides, shipping probably would cost twice as much as the antenna. Any ideas for a source? The AC adapter also is missing. What's the best way to prevent a wall wart from creating a hum problem, or should I just get a real power supply (regulated, nonswitching)? Thanks. Avery, Look he http://www.grove-ent.com/ANT6.html Les |
Wanted: whip for Lowe HF-225 & advice on power supply
www.ramseykits.com sells whip antennas for $14.95 You might find a
similar antenna from an old junk radio or even tv set whip or rabbit ears antennas. cuhulin |
Wanted: whip for Lowe HF-225 & advice on power supply
Perfect except for the BNC connector, but I might have a BNC
female/PL-259 adapter around. Thanks, Les. |
Wanted: whip for Lowe HF-225 & advice on power supply
I've got plenty of whips around from junker radios I've dismantled over
the years, but I was hoping for an exact replacement. |
Wanted: whip for Lowe HF-225 & advice on power supply
Is that all it was?
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Wanted: whip for Lowe HF-225 & advice on power supply
Avery W3AVE wrote: Is that all it was? For ham and commercial handie-talkies as well as hand-held scanners, the Grove rugged, chrome, telescoping whip features a swivel BNC base, allowing the whip to be used straight or turned to a right angle for those special applications. Adjustable length from 6" to 29" allows frequency optimization. Quarter-wave resonance at VHF hi band, 3 dB gain or more over rubber duckies at UHF. (Collapsed to 6" and straight, or extended to 29" and swiveled 90 degrees). Probably fine for VHF/UHF, but it may be too short for HF. I also have an HF-225 (mine is the Europa version) and looked into this a while back; I have not found an acceptable solution short of a Miracle Whip antenna (a tunable 56" whip), which is expensive. RK |
Wanted: whip for Lowe HF-225 & advice on power supply
In article .com,
"Avery W3AVE" wrote: The 225 I just won on ebay turns out not to have the factory-supplied whip, which I'd like to have because I like my radios to be complete and because it might come in handy. Lowe no longer ships to the U.S., and I don't know anybody in G.B. who might ship it for me. Besides, shipping probably would cost twice as much as the antenna. Any ideas for a source? The AC adapter also is missing. What's the best way to prevent a wall wart from creating a hum problem, or should I just get a real power supply (regulated, nonswitching)? You want the power supply "wall wart" to be a linear regulator type that uses a transformer and is bypassed for low noise. -- Telamon Ventura, California |
Wanted: whip for Lowe HF-225 & advice on power supply
rkhalona wrote: I also have an HF-225 (mine is the Europa version) and looked into this a while back; I have not found an acceptable solution short of a Miracle Whip antenna (a tunable 56" whip), which is expensive. RK Well, I guess I could rip the whip off my Satellit 800... (kidding!) |
Wanted: whip for Lowe HF-225 & advice on power supply
There are wall warts that don't use a transformer to step down the
voltage?? Seems to me the only way to tell whether the output is regulated and bypassed is to check the voltage with varying loads and 'scope the output for noise. I'm starting to think it would be easier just to get one of those little Radio Shack 2 or 3 amp power supplies for $15 or $20 new or at a hamfest for $5. |
Wanted: whip for Lowe HF-225 & advice on power supply
Yike, $25 for a whip plus shipping! But I might do it.
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Wanted: whip for Lowe HF-225 & advice on power supply
Yike, $25 for a whip plus shipping! But I might do it.
|
Wanted: whip for Lowe HF-225 & advice on power supply
The hum is due to a flaw in the audio output circuit design. Plug in
an external speaker and it will go away. There's a resistor (R134 or 139 - can't read the lousy schematic, but it's connected to J7) you can bypass (short out), and the hum in the internal speaker will be gone completely with an unregulated wallwart. No one has been able to figure out what the original Lowe designer was attempting to do with this circuit by connecting the internal speaker capacitively to the B+ rail instead of ground (which is what the external speaker connects to when plugged in. Frank K3YAZ |
Wanted: whip for Lowe HF-225 & advice on power supply
By the way the resistor is a 1K, 1 watt.
Frank |
Wanted: whip for Lowe HF-225 & advice on power supply
Avery W3AVE wrote:
Yup, I realized that's all I need to do when I saw a photo of the rear. But I think I'll pull out one of my old Weller guns. More authentic for a job like this. I remember flattening the centre of a bit of 14 guage solid wire for a home made replacement tip on those things.The gun was handy for one or two solder joints, but after that,soon became a pain. I've preferred the pencil type ever since. I've found around thirty five watts works for everything I do...well, not EVERYTHING, but a propane torch handles those jobs. mike |
Wanted: whip for Lowe HF-225 & advice on power supply
ah.
Anyway, back to the whip. The amp and whip form an active antenna which works pretty well. You won't get nearly the sensitivity off the same whip connected to the 50 ohm input of the radio. But it sounds like you might not be using it that way anyway. Lowe will sell the whip amp for the HF250, which can be adapted to the HF225. You'll have to find someone outside of the US to buy it and send it to you, though. How about the sync detector? Did your HF225 come with that? John "Avery W3AVE" wrote in message oups.com... John Black wrote: The Radio Shack supply would work fine. I don't think there was ever an original 120v Lowe supply; every one I've seen was 220v. There was. I had the Europa version of the radio, which I bought new in the '90s (I never should have sold it) and which came with a 120V wall wart. |
Wanted: whip for Lowe HF-225 & advice on power supply
John Black wrote: ah. Anyway, back to the whip. The amp and whip form an active antenna which works pretty well. You won't get nearly the sensitivity off the same whip connected to the 50 ohm input of the radio. But it sounds like you might not be using it that way anyway. I will, in fact. Lowe will sell the whip amp for the HF250, which can be adapted to the HF225. You'll have to find someone outside of the US to buy it and send it to you, though. I saw that Lowe has instructions for adapting the 250 amp to the 225, and I'd be interested in doing that...but I'll have to find somebody in the U.K. How about the sync detector? Did your HF225 come with that? John Yes. It's a Europa, so the FM/AM sync option came standard. Or if it didn't, it was installed. |
Wanted: whip for Lowe HF-225 & advice on power supply
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