Home |
Search |
Today's Posts |
|
#1
![]()
posted to rec.boats.electronics
|
|||
|
|||
![]()
My old VHF radio is not transmitting apparently. I need to check it
again to make sure it's not just gummed up from not being used. Any easy way to check if it's the mic instead of the radio itself? |
#2
![]()
posted to rec.boats.electronics
|
|||
|
|||
![]()
"Midlant" wrote in news:9nlgi.146786$vE1.69978
@newsfe24.lga: Any easy way to check if it's the mic instead of the radio itself? Just find someone with a VHF marine walkie talkie. Don't use Ch 16. I keep one of these inexpensive meters in the antenna line of each VHF so I can SEE it's putting out that distress call, RF wise. http://www.walcottcb.com/valor-v6050...-watt-meter-p- 920.html PWR tells you its transmitting. Switch to FWD and turn the knob until it's full scale "SET", switch to REF and read the SWR, telling you what the antenna and coax condition is. No reflected power 1:1 is perfect but rarely attainable. Any SWR below 2:1 is fine.... The meter is self powered from the RF, itself. Just feed the RF power through it on its way to the antenna. This is 90% of radio troubles...No RF or bad antenna. Larry -- Marine radios have "Icom" printed right there on the front of them. |
#3
![]()
posted to rec.boats.electronics
|
|||
|
|||
![]()
Easier said than done, hence the reason I asked on here. If I knew some
one nearby.....Thanks though. John "Larry" wrote in message ... "Midlant" wrote in news:9nlgi.146786$vE1.69978 @newsfe24.lga: Any easy way to check if it's the mic instead of the radio itself? Just find someone with a VHF marine walkie talkie. Don't use Ch 16. I keep one of these inexpensive meters in the antenna line of each VHF so I can SEE it's putting out that distress call, RF wise. http://www.walcottcb.com/valor-v6050...-watt-meter-p- 920.html PWR tells you its transmitting. Switch to FWD and turn the knob until it's full scale "SET", switch to REF and read the SWR, telling you what the antenna and coax condition is. No reflected power 1:1 is perfect but rarely attainable. Any SWR below 2:1 is fine.... The meter is self powered from the RF, itself. Just feed the RF power through it on its way to the antenna. This is 90% of radio troubles...No RF or bad antenna. Larry -- Marine radios have "Icom" printed right there on the front of them. |
#4
![]()
posted to rec.boats.electronics
|
|||
|
|||
![]()
In article ,
Larry wrote: "Midlant" wrote in news:9nlgi.146786$vE1.69978 @newsfe24.lga: Any easy way to check if it's the mic instead of the radio itself? Just find someone with a VHF marine walkie talkie. Don't use Ch 16. I keep one of these inexpensive meters in the antenna line of each VHF so I can SEE it's putting out that distress call, RF wise. http://www.walcottcb.com/valor-v6050...-watt-meter-p- 920.html PWR tells you its transmitting. Switch to FWD and turn the knob until it's full scale "SET", switch to REF and read the SWR, telling you what the antenna and coax condition is. No reflected power 1:1 is perfect but rarely attainable. Any SWR below 2:1 is fine.... The meter is self powered from the RF, itself. Just feed the RF power through it on its way to the antenna. This is 90% of radio troubles...No RF or bad antenna. Larry But, But, Larry, the above only proves that the unit is radiating RF, NOT that it is capable of actually modulating voice on that RF..... The HandiTalkie will tell him if the unit is actually modulating voice, but, REALLY, he needs to get the whole radio over to a "Good" Radio Tech, with good instrumentation, and get the system check out..... Bruce in alaska you get what you PAY for...... -- add a 2 before @ |
#5
![]()
posted to rec.boats.electronics
|
|||
|
|||
![]()
What I need is someone with a radio on my street so I can test it before
taking it back out. To transition the harbor, I have to request clearance. Yes, it's that kind of harbor. One where the boats are grey. "Bruce in Alaska" wrote in message ... In article , Larry wrote: "Midlant" wrote in news:9nlgi.146786$vE1.69978 @newsfe24.lga: Any easy way to check if it's the mic instead of the radio itself? Just find someone with a VHF marine walkie talkie. Don't use Ch 16. I keep one of these inexpensive meters in the antenna line of each VHF so I can SEE it's putting out that distress call, RF wise. http://www.walcottcb.com/valor-v6050...-watt-meter-p- 920.html PWR tells you its transmitting. Switch to FWD and turn the knob until it's full scale "SET", switch to REF and read the SWR, telling you what the antenna and coax condition is. No reflected power 1:1 is perfect but rarely attainable. Any SWR below 2:1 is fine.... The meter is self powered from the RF, itself. Just feed the RF power through it on its way to the antenna. This is 90% of radio troubles...No RF or bad antenna. Larry But, But, Larry, the above only proves that the unit is radiating RF, NOT that it is capable of actually modulating voice on that RF..... The HandiTalkie will tell him if the unit is actually modulating voice, but, REALLY, he needs to get the whole radio over to a "Good" Radio Tech, with good instrumentation, and get the system check out..... Bruce in alaska you get what you PAY for...... -- add a 2 before @ |
#6
![]()
posted to rec.boats.electronics
|
|||
|
|||
![]()
"Midlant" wrote in news:UAZgi.85$IK1.53
@newsfe23.lga: What I need is someone with a radio on my street so I can test it before taking it back out. To transition the harbor, I have to request clearance. Yes, it's that kind of harbor. One where the boats are grey. Don't key the transmitter without an antenna connected. That may destroy the output power amp. It's not supposed to, but it can. Larry W4CSC and other fine old calls since 1957. -- |
#7
![]()
posted to rec.boats.electronics
|
|||
|
|||
![]()
I've got the antenna hooked up. While outside today polishing the hull,
I kept an eye out for anyone towing a boat in passing. Every now and then one goes by, but not today. If the mic is bad, the radio is old enough to warrant buying a new one. Seems to be quite a selection for around a $100, some cheaper on ebay. "Larry" wrote in message ... "Midlant" wrote in news:UAZgi.85$IK1.53 @newsfe23.lga: What I need is someone with a radio on my street so I can test it before taking it back out. To transition the harbor, I have to request clearance. Yes, it's that kind of harbor. One where the boats are grey. Don't key the transmitter without an antenna connected. That may destroy the output power amp. It's not supposed to, but it can. Larry W4CSC and other fine old calls since 1957. -- |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Fed Register: High Frequency (HF) Radio Broadcasts of Marine Weather Forecasts may soon end | General | |||
Fed Register: High Frequency (HF) Radio Broadcasts of Marine Weather Forecasts may soon end | Cruising | |||
Fed Register: High Frequency (HF) Radio Broadcasts of Marine Weather Forecasts may soon end | Electronics | |||
HAM and SSB Frequencies | Cruising |