Ramsey Electronics HR40 Manual de Instruções descarregar pdf (Página 33)

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As you can see mode 1 will send the ID (15sec.) then wait 45sec. and

then start over. This is the beacon mode Identifying once per minute.

Mode 2 Identifies then sends a tone for 45 sec. so it will be on the air

continuously. These modes will make the Fox easy to find for beginners.

Try modes 3 through 7 for a little more challenge and for the really tough

almost impossible to find fox mode 15 is only on the air 15 seconds every

hour.

TROUBLESHOOTING HINTS

The transmitter is very easy to troubleshoot, providing you use some simple

common sense. If you cannot get any readings on the test points or RF

power output, check and see if the crystal oscillator is running - how? Well,

take a look at the crystal and see the frequency marked on it, it should be

16.280 MHz (1/9 of 146.52 MHz), right in the middle of the HF shortwave

broadcast band, easily received on any shortwave radio. You should be able

tto "hear" the oscillator running quite easily. If crystal oscillator operation is

confirmed, let's move on a step further. The oscillator is followed by a tripler

stage, and 3 times 16.280 MHz is 48.840 MHz. Once again this signal can

be tuned on a nearby receiver such as a scanner. One more tripler follows

and that moves us up to the final 146.520 MHz output frequency, easily

tuned on a two meter rig. This procedure will lead us to the final amplifier

stages where we can pretty much do a thorough visual inspection.

Common problems to look for are solder bridges or interchanged

capacitors - "hum-m-m-, that's not a .001 uf where a 100 pf should be is it?"

If there is a problem in getting the modulation working, a scope or audio

amplifier will allow tracing down any problem in short order. The audio drives

the varactor diode D1. How about keying of the transmitter? Check to be

sure that the PTT line is switching off and on. If you hear a AC hum on the

transmitted signal, usual causes are RF getting back into the power supply

or a bad VSWR on the antenna.

These short checks in no way detail any and all problems that can rear their

ugly head, but should get you on the way to solving most errors. We'd like to

be able to foresee a problem a builder may encounter, but the sheer number

of parts and the permutations and combinations of installing them makes an

list of precise, exact solutions impossible. If you run into a roadblock, gather

all your thoughts and information and give a call to the factory for some help.

If you elect to enlist the help of a local expert, great - but be sure the expert

is qualified - no need for having someone lead you down the wrong path!

Remember you may always return the kit for factory service, and there's no

charge if the problem is our fault. See the warranty on the last page of this

manual.

OTHER ENCLOSURE RECOMMENDATIONS

The Ramsey Kit Warranty

Please read carefully BEFORE calling or writing in about your kit. Most problems can be solved

without contacting the factory.

Notice that this is not a "fine print" warranty. We want you to understand your rights and ours too! All

Ramsey kits will work if assembled properly. The very fact that your kit includes this new manual is your

assurance that a team of knowledgeable people have field-tested several "copies" of this kit straight

from the Ramsey Inventory. If you need help, please read through your manual carefully, all information

required to properly build and test your kit is contained within the pages!

1. DEFECTIVE PARTS: It's always easy to blame a part for a problem in your kit, Before you conclude

that a part may be bad, thoroughly check your work. Today's semiconductors and passive components

have reached incredibly high reliability levels, and it’s sad to say that our human construction skills

have not! But on rare occasions a sour component can slip through. All our kit parts carry the Ramsey

Electronics Warranty that they are free from defects for a full ninety (90) days from the date of

purchase. Defective parts will be replaced promptly at our expense. If you suspect any part to be

defective, please mail it to our factory for testing and replacement. Please send only the defective part

(s), not the entire kit. The part(s) MUST be returned to us in suitable condition for testing. Please be

aware that testing can usually determine if the part was truly defective or damaged by assembly or

usage. Don't be afraid of telling us that you 'blew-it', we're all human and in most cases, replacement

parts are very reasonably priced.

2. MISSING PARTS: Before assuming a part value is incorrect, check the parts listing carefully to see if

it is a critical value such as a specific coil or IC, or whether a RANGE of values is suitable (such as

"100 to 500 uF"). Often times, common sense will solve a mysterious missing part problem. If you're

missing five 10K ohm resistors and received five extra 1K resistors, you can pretty much be assured

that the '1K ohm' resistors are actually the 'missing' 10 K parts ("Hum-m-m, I guess the 'red' band really

does look orange!") Ramsey Electronics project kits are packed with pride in the USA. If you believe

we packed an incorrect part or omitted a part clearly indicated in your assembly manual as supplied

with the basic kit by Ramsey, please write or call us with information on the part you need and proof of

kit purchase

3. FACTORY REPAIR OF ASSEMBLED KITS:

To qualify for Ramsey Electronics factory repair, kits MUST:

1. NOT be assembled with acid core solder or flux.

2. NOT be modified in any manner.

3. BE returned in fully-assembled form, not partially assembled.

4. BE accompanied by the proper repair fee. No repair will be undertaken until we have received the

MINIMUM repair fee (1/2 hour labor) of $18.00, or authorization to charge it to your credit card

account.

5. INCLUDE a description of the problem and legible return address. DO NOT send a separate letter;

include all correspondence with the unit. Please do not include your own hardware such as

non-Ramsey cabinets, knobs, cables, external battery packs and the like. Ramsey

Electronics, Inc., reserves the right to refuse repair on ANY item in which we find excessive

problems or damage due to construction methods. To assist customers in such situations,

Ramsey Electronics, Inc., reserves the right to solve their needs on a case-by-case basis.

The repair is $36.00 per hour, regardless of the cost of the kit. Please understand that our technicians

are not volunteers and that set-up, testing, diagnosis, repair and repacking and paperwork can take

nearly an hour of paid employee time on even a simple kit. Of course, if we find that a part was

defective in manufacture, there will be no charge to repair your kit (But please realize that our

technicians know the difference between a defective part and parts burned out or damaged through

improper use or assembly).

4. REFUNDS: You are given ten (10) days to examine our products. If you are not satisfied, you may

return your unassembled kit with all the parts and instructions and proof of purchase to the factory for a

full refund. The return package should be packed securely. Insurance is recommended. Please do not

cause needless delays, read all information carefully.

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